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Standard Library

Below is the API for the OCaml standard library. It's directly copied over from the OCaml Manual, formatted to the Reason syntax and styled accordingly. The API docs are work-in-progress; we'll be polishing these gradually!

If you're targeting JavaScript, the API docs for BuckleScript includes all of below, plus JS-specific APIs.

Index of values


( * ) [Pervasives]
Integer multiplication.
( ** ) [Pervasives]
Exponentiation.
( **/ ) [Num]
Same as Num.power_num.
( *. ) [Pervasives]
Floating-point multiplication
( */ ) [Num]
Same as Num.mult_num.
(!) [Pervasives]
!r returns the current contents of reference r.
(!=) [Pervasives]
Negation of Pervasives.(==).
(&&) [Pervasives]
The boolean 'and'.
(&) [Pervasives]
(+) [Pervasives]
Integer addition.
(+.) [Pervasives]
Floating-point addition
(+/) [Num]
Same as Num.add_num.
(-) [Pervasives]
Integer subtraction.
(-.) [Pervasives]
Floating-point subtraction
(-/) [Num]
Same as Num.sub_num.
(/) [Pervasives]
Integer division.
(/.) [Pervasives]
Floating-point division.
(//) [Num]
Same as Num.div_num.
(:=) [Pervasives]
r := a stores the value of a in reference r.
(<) [Pervasives]
(</) [Num]
(<=) [Pervasives]
(<=/) [Num]
(<>) [Pervasives]
Negation of Pervasives.(=).
(<>/) [Num]
(=) [Pervasives]
e1 = e2 tests for structural equality of e1 and e2.
(=/) [Num]
(==) [Pervasives]
e1 == e2 tests for physical equality of e1 and e2.
(>) [Pervasives]
(>/) [Num]
(>=) [Pervasives]
Structural ordering functions.
(>=/) [Num]
(@) [Pervasives]
List concatenation.
(@@) [Pervasives]
Application operator: g @@ f @@ x is exactly equivalent to g (f (x)).
(^) [Pervasives]
String concatenation.
(^^) [Pervasives]
f1 ^^ f2 catenates format strings f1 and f2.
(asr) [Pervasives]
n asr m shifts n to the right by m bits.
(land) [Pervasives]
Bitwise logical and.
(lor) [Pervasives]
Bitwise logical or.
(lsl) [Pervasives]
n lsl m shifts n to the left by m bits.
(lsr) [Pervasives]
n lsr m shifts n to the right by m bits.
(lxor) [Pervasives]
Bitwise logical exclusive or.
(mod) [Pervasives]
Integer remainder.
(or) [Pervasives]
(|>) [Pervasives]
Reverse-application operator: x |> f |> g is exactly equivalent to g (f (x)).
(||) [Pervasives]
The boolean 'or'.
(~+) [Pervasives]
Unary addition.
(~+.) [Pervasives]
Unary addition.
(~-) [Pervasives]
Unary negation.
(~-.) [Pervasives]
Unary negation.
__FILE__ [Pervasives]
__FILE__ returns the name of the file currently being parsed by the compiler.
__LINE_OF__ [Pervasives]
__LINE__ expr returns a pair (line, expr), where line is the line number at which the expression expr appears in the file currently being parsed by the compiler.
__LINE__ [Pervasives]
__LINE__ returns the line number at which this expression appears in the file currently being parsed by the compiler.
__LOC_OF__ [Pervasives]
__LOC_OF__ expr returns a pair (loc, expr) where loc is the location of expr in the file currently being parsed by the compiler, with the standard error format of OCaml: "File %S, line %d, characters %d-%d".
__LOC__ [Pervasives]
__LOC__ returns the location at which this expression appears in the file currently being parsed by the compiler, with the standard error format of OCaml: "File %S, line %d, characters %d-%d".
__MODULE__ [Pervasives]
__MODULE__ returns the module name of the file being parsed by the compiler.
__POS_OF__ [Pervasives]
__POS_OF__ expr returns a pair (loc,expr), where loc is a tuple (file,lnum,cnum,enum) corresponding to the location at which the expression expr appears in the file currently being parsed by the compiler.
__POS__ [Pervasives]
__POS__ returns a tuple (file,lnum,cnum,enum), corresponding to the location at which this expression appears in the file currently being parsed by the compiler.

A
abs [Pervasives]
Return the absolute value of the argument.
abs [Nativeint]
Return the absolute value of its argument.
abs [Int64]
Return the absolute value of its argument.
abs [Int32]
Return the absolute value of its argument.
abs_float [Pervasives]
abs_float f returns the absolute value of f.
abs_num [Num]
Absolute value.
absname [Location]
absolute_path [Location]
abstract_tag [Obj]
accept [Unix]
Accept connections on the given socket.
access [Unix]
Check that the process has the given permissions over the named file.
acos [Pervasives]
Arc cosine.
add [Weak.S]
add t x adds x to t.
add [Set.S]
add x s returns a set containing all elements of s, plus x.
add [Queue]
add x q adds the element x at the end of the queue q.
add [Nativeint]
Addition.
add [MoreLabels.Set.S]
add [MoreLabels.Map.S]
add [MoreLabels.Hashtbl.SeededS]
add [MoreLabels.Hashtbl.S]
add [MoreLabels.Hashtbl]
add [Map.S]
add x y m returns a map containing the same bindings as m, plus a binding of x to y.
add [Int64]
Addition.
add [Int32]
Addition.
add [Hashtbl.SeededS]
add [Hashtbl.S]
add [Hashtbl]
Hashtbl.add tbl x y adds a binding of x to y in table tbl.
add [Complex]
Addition
add_buffer [Buffer]
add_buffer b1 b2 appends the current contents of buffer b2 at the end of buffer b1.
add_bytes [Buffer]
add_string b s appends the string s at the end of the buffer b.
add_channel [Buffer]
add_channel b ic n reads exactly n character from the input channel ic and stores them at the end of buffer b.
add_char [Buffer]
add_char b c appends the character c at the end of the buffer b.
add_docs_attrs [Docstrings]
Convert item documentation to attributes and add them to an attribute list
add_in_char_set [CamlinternalFormat]
add_info_attrs [Docstrings]
Convert field info to attributes and add them to an attribute list
add_initializer [CamlinternalOO]
add_num [Num]
Addition
add_offset [Obj]
add_ppx_context_sig [Ast_mapper]
Same as add_ppx_context_str, but for signatures.
add_ppx_context_str [Ast_mapper]
Extract information from the current environment and encode it into an attribute which is prepended to the list of structure items in order to pass the information to an external processor.
add_string [Buffer]
add_string b s appends the string s at the end of the buffer b.
add_subbytes [Buffer]
add_substring b s ofs len takes len characters from offset ofs in byte sequence s and appends them at the end of the buffer b.
add_substitute [Buffer]
add_substitute b f s appends the string pattern s at the end of the buffer b with substitution.
add_substring [Buffer]
add_substring b s ofs len takes len characters from offset ofs in string s and appends them at the end of the buffer b.
add_text_attrs [Docstrings]
Convert text to attributes and add them to an attribute list
alarm [Unix]
Schedule a SIGALRM signal after the given number of seconds.
alias [Ast_helper.Mty]
alias [Ast_helper.Pat]
alias [Ast_helper.Typ]
align [Arg]
Align the documentation strings by inserting spaces at the first space, according to the length of the keyword.
allocated_bytes [Gc]
Return the total number of bytes allocated since the program was started.
any [Ast_helper.Pat]
any [Ast_helper.Typ]
append [ListLabels]
Catenate two lists.
append [List]
Catenate two lists.
append [ArrayLabels]
ArrayLabels.append v1 v2 returns a fresh array containing the concatenation of the arrays v1 and v2.
append [Array]
Array.append v1 v2 returns a fresh array containing the concatenation of the arrays v1 and v2.
apply [Ast_mapper]
Apply a mapper (parametrized by the unit name) to a dumped parsetree found in the source file and put the result in the target file.
apply [Ast_helper.Cl]
apply [Ast_helper.Mod]
apply [Ast_helper.Exp]
approx_num_exp [Num]
Approximate a number by a decimal.
approx_num_fix [Num]
arg [Complex]
Argument.
argv [Sys]
The command line arguments given to the process.
array [Ast_helper.Exp]
array [Ast_helper.Pat]
array [Sort]
Sort an array in increasing order according to an ordering predicate.
array1_of_genarray [Bigarray]
Return the one-dimensional big array corresponding to the given generic big array.
array2_of_genarray [Bigarray]
Return the two-dimensional big array corresponding to the given generic big array.
array3_of_genarray [Bigarray]
Return the three-dimensional big array corresponding to the given generic big array.
arrow [Ast_helper.Cty]
arrow [Ast_helper.Typ]
asin [Pervasives]
Arc sine.
asprintf [Format]
Same as printf above, but instead of printing on a formatter, returns a string containing the result of formatting the arguments.
assert_ [Ast_helper.Exp]
assoc [ListLabels]
assoc a l returns the value associated with key a in the list of pairs l.
assoc [List]
assoc a l returns the value associated with key a in the list of pairs l.
assq [ListLabels]
Same as ListLabels.assoc, but uses physical equality instead of structural equality to compare keys.
assq [List]
Same as List.assoc, but uses physical equality instead of structural equality to compare keys.
at_exit [Pervasives]
Register the given function to be called at program termination time.
atan [Pervasives]
Arc tangent.
atan2 [Pervasives]
atan2 y x returns the arc tangent of y /. x.
attr [Ast_helper.Cf]
attr [Ast_helper.Cl]
attr [Ast_helper.Ctf]
attr [Ast_helper.Cty]
attr [Ast_helper.Mod]
attr [Ast_helper.Mty]
attr [Ast_helper.Exp]
attr [Ast_helper.Pat]
attr [Ast_helper.Typ]
attribute [Ast_helper.Cf]
attribute [Ast_helper.Ctf]
attribute [Ast_helper.Str]
attribute [Ast_helper.Sig]
attribute_of_warning [Ast_mapper]
Encode a warning message into an 'ocaml.ppwarning' attribute which can be inserted in a generated Parsetree.

B
backtrace_slots [Printexc]
Returns the slots of a raw backtrace, or None if none of them contain useful information.
backtrace_status [Printexc]
Printexc.backtrace_status() returns true if exception backtraces are currently recorded, false if not.
basename [Filename]
Split a file name into directory name / base file name.
beginning_of_input [Scanf.Scanning]
Scanning.beginning_of_input ic tests the beginning of input condition of the given formatted input channel.
big_endian [Sys]
Whether the machine currently executing the Caml program is big-endian.
big_int_of_num [Num]
bind [Unix]
Bind a socket to an address.
bindings [MoreLabels.Map.S]
bindings [Map.S]
Return the list of all bindings of the given map.
bits [Random.State]
bits [Random]
Return 30 random bits in a nonnegative integer.
bits_of_float [Int64]
Return the internal representation of the given float according to the IEEE 754 floating-point 'double format' bit layout.
bits_of_float [Int32]
Return the internal representation of the given float according to the IEEE 754 floating-point 'single format' bit layout.
blit [Bigarray.Array3]
Copy the first big array to the second big array.
blit [Bigarray.Array2]
Copy the first big array to the second big array.
blit [Bigarray.Array1]
Copy the first big array to the second big array.
blit [Bigarray.Genarray]
Copy all elements of a big array in another big array.
blit [Weak]
Weak.blit ar1 off1 ar2 off2 len copies len weak pointers from ar1 (starting at off1) to ar2 (starting at off2).
blit [String]
blit [StringLabels]
String.blit src srcoff dst dstoff len copies len bytes from the string src, starting at index srcoff, to byte sequence dst, starting at character number dstoff.
blit [BytesLabels]
blit src srcoff dst dstoff len copies len bytes from sequence src, starting at index srcoff, to sequence dst, starting at index dstoff.
blit [Bytes]
blit src srcoff dst dstoff len copies len bytes from sequence src, starting at index srcoff, to sequence dst, starting at index dstoff.
blit [Buffer]
Buffer.blit src srcoff dst dstoff len copies len characters from the current contents of the buffer src, starting at offset srcoff to dst, starting at character dstoff.
blit [ArrayLabels]
ArrayLabels.blit v1 o1 v2 o2 len copies len elements from array v1, starting at element number o1, to array v2, starting at element number o2.
blit [Array]
Array.blit v1 o1 v2 o2 len copies len elements from array v1, starting at element number o1, to array v2, starting at element number o2.
blit_string [Bytes]
blit src srcoff dst dstoff len copies len bytes from string src, starting at index srcoff, to byte sequence dst, starting at index dstoff.
bool [Random.State]
These functions are the same as the basic functions, except that they use (and update) the given PRNG state instead of the default one.
bool [Random]
Random.bool () returns true or false with probability 0.5 each.
bool_of_string [Pervasives]
Convert the given string to a boolean.
bounded_full_split [Str]
Same as Str.bounded_split_delim, but returns the delimiters as well as the substrings contained between delimiters.
bounded_split [Str]
Same as Str.split, but splits into at most n substrings, where n is the extra integer parameter.
bounded_split_delim [Str]
Same as Str.bounded_split, but occurrences of the delimiter at the beginning and at the end of the string are recognized and returned as empty strings in the result.
bprintf [Printf]
Same as Printf.fprintf, but instead of printing on an output channel, append the formatted arguments to the given extensible buffer (see module Buffer).
bprintf [Format]
bscanf [Scanf]
bscanf ic fmt r1 ... rN f reads arguments for the function f, from the formatted input channel ic, according to the format string fmt, and applies f to these values.
bscanf_format [Scanf]
bscanf_format ic fmt f reads a format string token from the formatted input channel ic, according to the given format string fmt, and applies f to the resulting format string value.
bufput_acc [CamlinternalFormat]
bytes [Digest]
Return the digest of the given byte sequence.

C
c_layout [Bigarray]
capitalize [String]
Return a copy of the argument, with the first character set to uppercase.
capitalize [StringLabels]
Return a copy of the argument, with the first character set to uppercase.
capitalize [BytesLabels]
Return a copy of the argument, with the first byte set to uppercase.
capitalize [Bytes]
Return a copy of the argument, with the first byte set to uppercase.
cardinal [Set.S]
Return the number of elements of a set.
cardinal [MoreLabels.Set.S]
cardinal [MoreLabels.Map.S]
cardinal [Map.S]
Return the number of bindings of a map.
case [Ast_helper.Exp]
cat [Bytes]
cat s1 s2 concatenates s1 and s2 and returns the result as new byte sequence.
catch [Printexc]
Printexc.catch fn x is similar to Printexc.print, but aborts the program with exit code 2 after printing the uncaught exception.
catch_break [Sys]
catch_break governs whether interactive interrupt (ctrl-C) terminates the program or raises the Break exception.
ceil [Pervasives]
Round above to an integer value.
ceiling_num [Num]
ceiling_num n returns the smallest integer bigger or equal to n.
channel [Digest]
If len is nonnegative, Digest.channel ic len reads len characters from channel ic and returns their digest, or raises End_of_file if end-of-file is reached before len characters are read.
char [Bigarray]
As shown by the types of the values above, big arrays of kind float32_elt and float64_elt are accessed using the OCaml type float.
char_of_iconv [CamlinternalFormat]
char_of_int [Pervasives]
Return the character with the given ASCII code.
chdir [Unix]
Change the process working directory.
chdir [Sys]
Change the current working directory of the process.
check [Weak]
Weak.check ar n returns true if the nth cell of ar is full, false if it is empty.
check_suffix [Filename]
check_suffix name suff returns true if the filename name ends with the suffix suff.
chmod [Unix]
Change the permissions of the named file.
choose [Set.S]
Return one element of the given set, or raise Not_found if the set is empty.
choose [MoreLabels.Set.S]
choose [MoreLabels.Map.S]
choose [Map.S]
Return one binding of the given map, or raise Not_found if the map is empty.
chop_extension [Filename]
Return the given file name without its extension.
chop_suffix [Filename]
chop_suffix name suff removes the suffix suff from the filename name.
chown [Unix]
Change the owner uid and owner gid of the named file.
chr [Char]
Return the character with the given ASCII code.
chroot [Unix]
Change the process root directory.
class_ [Ast_helper.Str]
class_ [Ast_helper.Sig]
class_ [Ast_helper.Typ]
class_type [Ast_helper.Str]
class_type [Ast_helper.Sig]
classify_float [Pervasives]
Return the class of the given floating-point number: normal, subnormal, zero, infinite, or not a number.
clear [Weak.S]
Remove all elements from the table.
clear [Stack]
Discard all elements from a stack.
clear [Queue]
Discard all elements from a queue.
clear [MoreLabels.Hashtbl.SeededS]
clear [MoreLabels.Hashtbl.S]
clear [MoreLabels.Hashtbl]
clear [Hashtbl.SeededS]
clear [Hashtbl.S]
clear [Hashtbl]
Empty a hash table.
clear [Buffer]
Empty the buffer.
clear_close_on_exec [Unix]
Clear the ``close-on-exec'' flag on the given descriptor.
clear_nonblock [Unix]
Clear the ``non-blocking'' flag on the given descriptor.
clear_parser [Parsing]
Empty the parser stack.
close [Unix]
Close a file descriptor.
close_box [Format]
Closes the most recently opened pretty-printing box.
close_in [Scanf.Scanning]
Closes the Pervasives.in_channel associated with the given Scanning.in_channel formatted input channel.
close_in [Pervasives]
Close the given channel.
close_in_noerr [Pervasives]
Same as close_in, but ignore all errors.
close_out [Pervasives]
Close the given channel, flushing all buffered write operations.
close_out_noerr [Pervasives]
Same as close_out, but ignore all errors.
close_process [Unix]
Close channels opened by Unix.open_process, wait for the associated command to terminate, and return its termination status.
close_process_full [Unix]
Close channels opened by Unix.open_process_full, wait for the associated command to terminate, and return its termination status.
close_process_in [Unix]
Close channels opened by Unix.open_process_in, wait for the associated command to terminate, and return its termination status.
close_process_out [Unix]
Close channels opened by Unix.open_process_out, wait for the associated command to terminate, and return its termination status.
close_tag [Format]
close_tag () closes the most recently opened tag t.
close_tbox [Format]
Closes the most recently opened tabulation box.
closedir [Unix]
Close a directory descriptor.
closure_tag [Obj]
code [Char]
Return the ASCII code of the argument.
coerce [Ast_helper.Exp]
combine [ListLabels]
Transform a pair of lists into a list of pairs: combine [a1; ...; an] [b1; ...; bn] is [(a1,b1); ...; (an,bn)].
combine [List]
Transform a pair of lists into a list of pairs: combine [a1; ...; an] [b1; ...; bn] is [(a1,b1); ...; (an,bn)].
command [Sys]
Execute the given shell command and return its exit code.
comments [Lexer]
compact [Gc]
Perform a full major collection and compact the heap.
compare [String]
The comparison function for strings, with the same specification as Pervasives.compare.
compare [StringLabels]
The comparison function for strings, with the same specification as Pervasives.compare.
compare [Set.S]
Total ordering between sets.
compare [Pervasives]
compare x y returns 0 if x is equal to y, a negative integer if x is less than y, and a positive integer if x is greater than y.
compare [Nativeint]
The comparison function for native integers, with the same specification as Pervasives.compare.
compare [Set.OrderedType]
A total ordering function over the set elements.
compare [MoreLabels.Set.S]
compare [MoreLabels.Map.S]
compare [Map.OrderedType]
A total ordering function over the keys.
compare [Map.S]
Total ordering between maps.
compare [Int64]
The comparison function for 64-bit integers, with the same specification as Pervasives.compare.
compare [Int32]
The comparison function for 32-bit integers, with the same specification as Pervasives.compare.
compare [Digest]
The comparison function for 16-character digest, with the same specification as Pervasives.compare and the implementation shared with String.compare.
compare [Char]
The comparison function for characters, with the same specification as Pervasives.compare.
compare [BytesLabels]
The comparison function for byte sequences, with the same specification as Pervasives.compare.
compare [Bytes]
The comparison function for byte sequences, with the same specification as Pervasives.compare.
compare_num [Num]
Return -1, 0 or 1 if the first argument is less than, equal to, or greater than the second argument.
complex32 [Bigarray]
complex64 [Bigarray]
concat [String]
String.concat sep sl concatenates the list of strings sl, inserting the separator string sep between each.
concat [StringLabels]
String.concat sep sl concatenates the list of strings sl, inserting the separator string sep between each.
concat [ListLabels]
Concatenate a list of lists.
concat [List]
Concatenate a list of lists.
concat [Filename]
concat dir file returns a file name that designates file file in directory dir.
concat [BytesLabels]
concat sep sl concatenates the list of byte sequences sl, inserting the separator byte sequence sep between each, and returns the result as a new byte sequence.
concat [Bytes]
concat sep sl concatenates the list of byte sequences sl, inserting the separator byte sequence sep between each, and returns the result as a new byte sequence.
concat [ArrayLabels]
Same as ArrayLabels.append, but concatenates a list of arrays.
concat [Array]
Same as Array.append, but concatenates a list of arrays.
concat_fmt [CamlinternalFormatBasics]
concat_fmtty [CamlinternalFormatBasics]
concrete [Ast_helper.Cf]
conj [Complex]
Conjugate: given the complex x + i.y, returns x - i.y.
connect [Unix]
Connect a socket to an address.
constant [Ast_helper.Exp]
constant [Ast_helper.Pat]
constr [Ast_helper.Cl]
constr [Ast_helper.Cty]
constr [Ast_helper.Typ]
constraint_ [Ast_helper.Cf]
constraint_ [Ast_helper.Cl]
constraint_ [Ast_helper.Ctf]
constraint_ [Ast_helper.Mod]
constraint_ [Ast_helper.Exp]
constraint_ [Ast_helper.Pat]
construct [Ast_helper.Exp]
construct [Ast_helper.Pat]
constructor [Ast_helper.Te]
constructor [Ast_helper.Type]
contains [String]
String.contains s c tests if character c appears in the string s.
contains [StringLabels]
String.contains s c tests if character c appears in the string s.
contains [BytesLabels]
contains s c tests if byte c appears in s.
contains [Bytes]
contains s c tests if byte c appears in s.
contains_from [String]
String.contains_from s start c tests if character c appears in s after position start.
contains_from [StringLabels]
String.contains_from s start c tests if character c appears in s after position start.
contains_from [BytesLabels]
contains_from s start c tests if byte c appears in s after position start.
contains_from [Bytes]
contains_from s start c tests if byte c appears in s after position start.
contents [Buffer]
Return a copy of the current contents of the buffer.
convert_raw_backtrace_slot [Printexc]
Extracts the user-friendly backtrace_slot from a low-level raw_backtrace_slot.
copy [String]
Return a copy of the given string.
copy [StringLabels]
Return a copy of the given string.
copy [Stack]
Return a copy of the given stack.
copy [Random.State]
Return a copy of the given state.
copy [Queue]
Return a copy of the given queue.
copy [Oo]
Oo.copy o returns a copy of object o, that is a fresh object with the same methods and instance variables as o.
copy [MoreLabels.Hashtbl.SeededS]
copy [MoreLabels.Hashtbl.S]
copy [MoreLabels.Hashtbl]
copy [Hashtbl.SeededS]
copy [Hashtbl.S]
copy [Hashtbl]
Return a copy of the given hashtable.
copy [CamlinternalOO]
copy [BytesLabels]
Return a new byte sequence that contains the same bytes as the argument.
copy [Bytes]
Return a new byte sequence that contains the same bytes as the argument.
copy [ArrayLabels]
ArrayLabels.copy a returns a copy of a, that is, a fresh array containing the same elements as a.
copy [Array]
Array.copy a returns a copy of a, that is, a fresh array containing the same elements as a.
copysign [Pervasives]
copysign x y returns a float whose absolute value is that of x and whose sign is that of y.
core_type [Pprintast]
core_type [Parse]
cos [Pervasives]
Cosine.
cosh [Pervasives]
Hyperbolic cosine.
count [Weak.S]
Count the number of elements in the table.
count [Stream]
Return the current count of the stream elements, i.e.
counters [Gc]
Return (minor_words, promoted_words, major_words).
create [Bigarray.Array3]
Array3.create kind layout dim1 dim2 dim3 returns a new bigarray of three dimension, whose size is dim1 in the first dimension, dim2 in the second dimension, and dim3 in the third.
create [Bigarray.Array2]
Array2.create kind layout dim1 dim2 returns a new bigarray of two dimension, whose size is dim1 in the first dimension and dim2 in the second dimension.
create [Bigarray.Array1]
Array1.create kind layout dim returns a new bigarray of one dimension, whose size is dim.
create [Bigarray.Genarray]
Genarray.create kind layout dimensions returns a new big array whose element kind is determined by the parameter kind (one of float32, float64, int8_signed, etc) and whose layout is determined by the parameter layout (one of c_layout or fortran_layout).
create [Weak.S]
create n creates a new empty weak hash table, of initial size n.
create [Weak]
Weak.create n returns a new weak array of length n.
create [String]
String.create n returns a fresh byte sequence of length n.
create [StringLabels]
String.create n returns a fresh byte sequence of length n.
create [Stack]
Return a new stack, initially empty.
create [Queue]
Return a new queue, initially empty.
create [MoreLabels.Hashtbl.SeededS]
create [MoreLabels.Hashtbl.S]
create [MoreLabels.Hashtbl]
create [Hashtbl.SeededS]
create [Hashtbl.S]
create [Hashtbl]
Hashtbl.create n creates a new, empty hash table, with initial size n.
create [BytesLabels]
create n returns a new byte sequence of length n.
create [Bytes]
create n returns a new byte sequence of length n.
create [Buffer]
create n returns a fresh buffer, initially empty.
create [ArrayLabels]
create [Array]
create_alarm [Gc]
create_alarm f will arrange for f to be called at the end of each major GC cycle, starting with the current cycle or the next one.
create_char_set [CamlinternalFormat]
create_matrix [ArrayLabels]
create_matrix [Array]
create_object [CamlinternalOO]
create_object_and_run_initializers [CamlinternalOO]
create_object_opt [CamlinternalOO]
create_process [Unix]
create_process prog args new_stdin new_stdout new_stderr forks a new process that executes the program in file prog, with arguments args.
create_process_env [Unix]
create_process_env prog args env new_stdin new_stdout new_stderr works as Unix.create_process, except that the extra argument env specifies the environment passed to the program.
create_table [CamlinternalOO]
curr [Location]
Get the location of the current token from the lexbuf.
current [Arg]
Position (in Sys.argv) of the argument being processed.
current_dir_name [Filename]
The conventional name for the current directory (e.g.
custom_tag [Obj]
cygwin [Sys]
True if Sys.os_type = "Cygwin".

D
data_size [Marshal]
decl [Ast_helper.Te]
decr [Pervasives]
Decrement the integer contained in the given reference.
decr_num [Num]
decr r is r:=!r-1, where r is a reference to a number.
default [Pprintast]
default_error_reporter [Location]
Original error reporter for use in hooks.
default_loc [Ast_helper]
Default value for all optional location arguments.
default_mapper [Ast_mapper]
A default mapper, which implements a "deep identity" mapping.
default_warning_printer [Location]
Original warning printer for use in hooks.
delete_alarm [Gc]
delete_alarm a will stop the calls to the function associated to a.
descr_of_in_channel [Unix]
Return the descriptor corresponding to an input channel.
descr_of_out_channel [Unix]
Return the descriptor corresponding to an output channel.
diff [Set.S]
Set difference.
diff [MoreLabels.Set.S]
dim [Bigarray.Array1]
Return the size (dimension) of the given one-dimensional big array.
dim1 [Bigarray.Array3]
Return the first dimension of the given three-dimensional big array.
dim1 [Bigarray.Array2]
Return the first dimension of the given two-dimensional big array.
dim2 [Bigarray.Array3]
Return the second dimension of the given three-dimensional big array.
dim2 [Bigarray.Array2]
Return the second dimension of the given two-dimensional big array.
dim3 [Bigarray.Array3]
Return the third dimension of the given three-dimensional big array.
dims [Bigarray.Genarray]
Genarray.dims a returns all dimensions of the big array a, as an array of integers of length Genarray.num_dims a.
dir_sep [Filename]
The directory separator (e.g.
dirname [Filename]
div [Nativeint]
Integer division.
div [Int64]
Integer division.
div [Int32]
Integer division.
div [Complex]
Division
div_num [Num]
Division
docs_attr [Docstrings]
docstring [Docstrings]
Create a docstring
docstring_body [Docstrings]
Get the text of a docstring
docstring_loc [Docstrings]
Get the location of a docstring
domain_of_sockaddr [Unix]
Return the socket domain adequate for the given socket address.
double_array_tag [Obj]
double_field [Obj]
double_tag [Obj]
drop_ppx_context_sig [Ast_mapper]
Same as drop_ppx_context_str, but for signatures.
drop_ppx_context_str [Ast_mapper]
Drop the ocaml.ppx.context attribute from a structure.
dummy_class [CamlinternalOO]
dummy_pos [Lexing]
A value of type position, guaranteed to be different from any valid position.
dummy_table [CamlinternalOO]
dup [Unix]
Return a new file descriptor referencing the same file as the given descriptor.
dup [Obj]
dup2 [Unix]
dup2 fd1 fd2 duplicates fd1 to fd2, closing fd2 if already opened.

E
echo_eof [Location]
elements [Set.S]
Return the list of all elements of the given set.
elements [MoreLabels.Set.S]
empty [Stream]
Return () if the stream is empty, else raise Stream.Failure.
empty [Set.S]
The empty set.
empty [MoreLabels.Set.S]
empty [MoreLabels.Map.S]
empty [Map.S]
The empty map.
empty [BytesLabels]
A byte sequence of size 0.
empty [Bytes]
A byte sequence of size 0.
empty_docs [Docstrings]
empty_info [Docstrings]
empty_text [Docstrings]
end_of_input [Scanf.Scanning]
Scanning.end_of_input ic tests the end-of-input condition of the given formatted input channel.
environment [Unix]
Return the process environment, as an array of strings with the format ``variable=value''.
eprintf [Printf]
Same as Printf.fprintf, but output on stderr.
eprintf [Format]
Same as fprintf above, but output on err_formatter.
epsilon_float [Pervasives]
The difference between 1.0 and the smallest exactly representable floating-point number greater than 1.0.
eq_num [Num]
equal [Set.S]
equal s1 s2 tests whether the sets s1 and s2 are equal, that is, contain equal elements.
equal [MoreLabels.Set.S]
equal [MoreLabels.Map.S]
equal [Map.S]
equal cmp m1 m2 tests whether the maps m1 and m2 are equal, that is, contain equal keys and associate them with equal data.
equal [Hashtbl.SeededHashedType]
The equality predicate used to compare keys.
equal [Hashtbl.HashedType]
The equality predicate used to compare keys.
erase_rel [CamlinternalFormatBasics]
err_formatter [Format]
A formatter to use with formatting functions below for output to standard error.
error [Location]
error_message [Unix]
Return a string describing the given error code.
error_of_exn [Location]
error_of_printer [Location]
error_of_printer_file [Location]
error_reporter [Location]
Hook for intercepting error reports.
errorf [Location]
escaped [String]
Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.
escaped [StringLabels]
Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.
escaped [Char]
Return a string representing the given character, with special characters escaped following the lexical conventions of OCaml.
escaped [BytesLabels]
Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.
escaped [Bytes]
Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.
establish_server [Unix]
Establish a server on the given address.
eval [Ast_helper.Str]
exception_ [Ast_helper.Str]
exception_ [Ast_helper.Sig]
exception_ [Ast_helper.Pat]
executable_name [Sys]
The name of the file containing the executable currently running.
execv [Unix]
execv prog args execute the program in file prog, with the arguments args, and the current process environment.
execve [Unix]
Same as Unix.execv, except that the third argument provides the environment to the program executed.
execvp [Unix]
Same as Unix.execv, except that the program is searched in the path.
execvpe [Unix]
Same as Unix.execve, except that the program is searched in the path.
exists [Set.S]
exists p s checks if at least one element of the set satisfies the predicate p.
exists [MoreLabels.Set.S]
exists [MoreLabels.Map.S]
exists [Map.S]
exists p m checks if at least one binding of the map satisfy the predicate p.
exists [ListLabels]
exists p [a1; ...; an] checks if at least one element of the list satisfies the predicate p.
exists [List]
exists p [a1; ...; an] checks if at least one element of the list satisfies the predicate p.
exists2 [ListLabels]
Same as ListLabels.exists, but for a two-argument predicate.
exists2 [List]
Same as List.exists, but for a two-argument predicate.
exit [Pervasives]
Terminate the process, returning the given status code to the operating system: usually 0 to indicate no errors, and a small positive integer to indicate failure.
exn_slot_id [Printexc]
Printexc.exn_slot_id returns an integer which uniquely identifies the constructor used to create the exception value exn (in the current runtime).
exn_slot_name [Printexc]
Printexc.exn_slot_id exn returns the internal name of the constructor used to create the exception value exn.
exp [Pervasives]
Exponential.
exp [Complex]
Exponentiation.
expm1 [Pervasives]
expm1 x computes exp x -. 1.0, giving numerically-accurate results even if x is close to 0.0.
expression [Printast]
expression [Pprintast]
expression [Parse]
extend [Bytes]
extend s left right returns a new byte sequence that contains the bytes of s, with left uninitialized bytes prepended and right uninitialized bytes appended to it.
extension [Ast_helper.Cf]
extension [Ast_helper.Cl]
extension [Ast_helper.Ctf]
extension [Ast_helper.Cty]
extension [Ast_helper.Str]
extension [Ast_helper.Sig]
extension [Ast_helper.Mod]
extension [Ast_helper.Mty]
extension [Ast_helper.Exp]
extension [Ast_helper.Pat]
extension [Ast_helper.Typ]
extension_id [Obj]
extension_name [Obj]
extension_of_error [Ast_mapper]
Encode an error into an 'ocaml.error' extension node which can be inserted in a generated Parsetree.
extension_slot [Obj]

F
failwith [Pervasives]
Raise exception Failure with the given string.
fast_sort [ListLabels]
Same as ListLabels.sort or ListLabels.stable_sort, whichever is faster on typical input.
fast_sort [List]
Same as List.sort or List.stable_sort, whichever is faster on typical input.
fast_sort [ArrayLabels]
Same as ArrayLabels.sort or ArrayLabels.stable_sort, whichever is faster on typical input.
fast_sort [Array]
Same as Array.sort or Array.stable_sort, whichever is faster on typical input.
fchmod [Unix]
Change the permissions of an opened file.
fchown [Unix]
Change the owner uid and owner gid of an opened file.
field [Ast_helper.Type]
field [Ast_helper.Exp]
field [Obj]
file [Digest]
Return the digest of the file whose name is given.
file_exists [Sys]
Test if a file with the given name exists.
fill [Bigarray.Array3]
Fill the given big array with the given value.
fill [Bigarray.Array2]
Fill the given big array with the given value.
fill [Bigarray.Array1]
Fill the given big array with the given value.
fill [Bigarray.Genarray]
Set all elements of a big array to a given value.
fill [Weak]
Weak.fill ar ofs len el sets to el all pointers of ar from ofs to ofs + len - 1.
fill [String]
String.fill s start len c modifies byte sequence s in place, replacing len bytes with c, starting at start.
fill [StringLabels]
String.fill s start len c modifies byte sequence s in place, replacing len bytes by c, starting at start.
fill [BytesLabels]
fill s start len c modifies s in place, replacing len characters with c, starting at start.
fill [Bytes]
fill s start len c modifies s in place, replacing len characters with c, starting at start.
fill [ArrayLabels]
ArrayLabels.fill a ofs len x modifies the array a in place, storing x in elements number ofs to ofs + len - 1.
fill [Array]
Array.fill a ofs len x modifies the array a in place, storing x in elements number ofs to ofs + len - 1.
filter [Set.S]
filter p s returns the set of all elements in s that satisfy predicate p.
filter [MoreLabels.Set.S]
filter [MoreLabels.Map.S]
filter [Map.S]
filter p m returns the map with all the bindings in m that satisfy predicate p.
filter [ListLabels]
filter p l returns all the elements of the list l that satisfy the predicate p.
filter [List]
filter p l returns all the elements of the list l that satisfy the predicate p.
final_tag [Obj]
finalise [Gc]
finalise f v registers f as a finalisation function for v.
finalise_release [Gc]
A finalisation function may call finalise_release to tell the GC that it can launch the next finalisation function without waiting for the current one to return.
find [Weak.S]
find t x returns an instance of x found in t.
find [Set.S]
find x s returns the element of s equal to x (according to Ord.compare), or raise Not_found if no such element exists.
find [MoreLabels.Set.S]
find [MoreLabels.Map.S]
find [MoreLabels.Hashtbl.SeededS]
find [MoreLabels.Hashtbl.S]
find [MoreLabels.Hashtbl]
find [Map.S]
find x m returns the current binding of x in m, or raises Not_found if no such binding exists.
find [ListLabels]
find p l returns the first element of the list l that satisfies the predicate p.
find [List]
find p l returns the first element of the list l that satisfies the predicate p.
find [Hashtbl.SeededS]
find [Hashtbl.S]
find [Hashtbl]
Hashtbl.find tbl x returns the current binding of x in tbl, or raises Not_found if no such binding exists.
find_all [Weak.S]
find_all t x returns a list of all the instances of x found in t.
find_all [MoreLabels.Hashtbl.SeededS]
find_all [MoreLabels.Hashtbl.S]
find_all [MoreLabels.Hashtbl]
find_all [ListLabels]
find_all is another name for ListLabels.filter.
find_all [List]
find_all is another name for List.filter.
find_all [Hashtbl.SeededS]
find_all [Hashtbl.S]
find_all [Hashtbl]
Hashtbl.find_all tbl x returns the list of all data associated with x in tbl.
first_chars [Str]
first_chars s n returns the first n characters of s.
first_non_constant_constructor_tag [Obj]
flatten [Longident]
flatten [ListLabels]
Same as concat.
flatten [List]
Same as concat.
float [Random.State]
float [Random]
Random.float bound returns a random floating-point number between 0 and bound (inclusive).
float [Pervasives]
float32 [Bigarray]
float64 [Bigarray]
float_of_bits [Int64]
Return the floating-point number whose internal representation, according to the IEEE 754 floating-point 'double format' bit layout, is the given int64.
float_of_bits [Int32]
Return the floating-point number whose internal representation, according to the IEEE 754 floating-point 'single format' bit layout, is the given int32.
float_of_int [Pervasives]
Convert an integer to floating-point.
float_of_num [Num]
float_of_string [Pervasives]
Convert the given string to a float.
floor [Pervasives]
Round below to an integer value.
floor_num [Num]
floor_num n returns the largest integer smaller or equal to n.
flush [Pervasives]
Flush the buffer associated with the given output channel, performing all pending writes on that channel.
flush_all [Pervasives]
Flush all open output channels; ignore errors.
flush_input [Lexing]
Discard the contents of the buffer and reset the current position to 0.
flush_str_formatter [Format]
Returns the material printed with str_formatter, flushes the formatter and resets the corresponding buffer.
fmt_ebb_of_string [CamlinternalFormat]
fold [Weak.S]
fold f t init computes (f d1 (... (f dN init))) where d1 ... dN are the elements of t in some unspecified order.
fold [Set.S]
fold f s a computes (f xN ... (f x2 (f x1 a))...), where x1 ... xN are the elements of s, in increasing order.
fold [Queue]
fold f accu q is equivalent to List.fold_left f accu l, where l is the list of q's elements.
fold [MoreLabels.Set.S]
fold [MoreLabels.Map.S]
fold [MoreLabels.Hashtbl.SeededS]
fold [MoreLabels.Hashtbl.S]
fold [MoreLabels.Hashtbl]
fold [Map.S]
fold f m a computes (f kN dN ... (f k1 d1 a)...), where k1 ... kN are the keys of all bindings in m (in increasing order), and d1 ... dN are the associated data.
fold [Hashtbl.SeededS]
fold [Hashtbl.S]
fold [Hashtbl]
Hashtbl.fold f tbl init computes (f kN dN ... (f k1 d1 init)...), where k1 ... kN are the keys of all bindings in tbl, and d1 ... dN are the associated values.
fold_left [ListLabels]
ListLabels.fold_left f a [b1; ...; bn] is f (... (f (f a b1) b2) ...) bn.
fold_left [List]
List.fold_left f a [b1; ...; bn] is f (... (f (f a b1) b2) ...) bn.
fold_left [ArrayLabels]
ArrayLabels.fold_left f x a computes f (... (f (f x a.(0)) a.(1)) ...) a.(n-1), where n is the length of the array a.
fold_left [Array]
Array.fold_left f x a computes f (... (f (f x a.(0)) a.(1)) ...) a.(n-1), where n is the length of the array a.
fold_left2 [ListLabels]
ListLabels.fold_left2 f a [b1; ...; bn] [c1; ...; cn] is f (... (f (f a b1 c1) b2 c2) ...) bn cn.
fold_left2 [List]
List.fold_left2 f a [b1; ...; bn] [c1; ...; cn] is f (... (f (f a b1 c1) b2 c2) ...) bn cn.
fold_right [ListLabels]
ListLabels.fold_right f [a1; ...; an] b is f a1 (f a2 (... (f an b) ...)).
fold_right [List]
List.fold_right f [a1; ...; an] b is f a1 (f a2 (... (f an b) ...)).
fold_right [ArrayLabels]
ArrayLabels.fold_right f a x computes f a.(0) (f a.(1) ( ... (f a.(n-1) x) ...)), where n is the length of the array a.
fold_right [Array]
Array.fold_right f a x computes f a.(0) (f a.(1) ( ... (f a.(n-1) x) ...)), where n is the length of the array a.
fold_right2 [ListLabels]
ListLabels.fold_right2 f [a1; ...; an] [b1; ...; bn] c is f a1 b1 (f a2 b2 (... (f an bn c) ...)).
fold_right2 [List]
List.fold_right2 f [a1; ...; an] [b1; ...; bn] c is f a1 b1 (f a2 b2 (... (f an bn c) ...)).
for_ [Ast_helper.Exp]
for_all [Set.S]
for_all p s checks if all elements of the set satisfy the predicate p.
for_all [MoreLabels.Set.S]
for_all [MoreLabels.Map.S]
for_all [Map.S]
for_all p m checks if all the bindings of the map satisfy the predicate p.
for_all [ListLabels]
for_all p [a1; ...; an] checks if all elements of the list satisfy the predicate p.
for_all [List]
for_all p [a1; ...; an] checks if all elements of the list satisfy the predicate p.
for_all2 [ListLabels]
Same as ListLabels.for_all, but for a two-argument predicate.
for_all2 [List]
Same as List.for_all, but for a two-argument predicate.
force [Lazy]
force x forces the suspension x and returns its result.
force [CamlinternalLazy]
force_lazy_block [CamlinternalLazy]
force_newline [Format]
Forces a newline in the current box.
force_poly [Ast_helper.Typ]
force_val [Lazy]
force_val x forces the suspension x and returns its result.
force_val [CamlinternalLazy]
force_val_lazy_block [CamlinternalLazy]
fork [Unix]
Fork a new process.
format [Printexc.Slot]
format pos slot returns the string representation of slot as raw_backtrace_to_string would format it, assuming it is the pos-th element of the backtrace: the 0-th element is pretty-printed differently than the others.
format [Nativeint]
Nativeint.format fmt n return the string representation of the native integer n in the format specified by fmt.
format [Int64]
Do not use this deprecated function.
format [Int32]
Do not use this deprecated function.
format_from_string [Scanf]
format_from_string s fmt converts a string argument to a format string, according to the given format string fmt.
format_of_string [Pervasives]
format_of_string s returns a format string read from the string literal s.
format_of_string_fmtty [CamlinternalFormat]
format_of_string_format [CamlinternalFormat]
formatter_for_warnings [Location]
formatter_of_buffer [Format]
formatter_of_buffer b returns a new formatter writing to buffer b.
formatter_of_out_channel [Format]
formatter_of_out_channel oc returns a new formatter that writes to the corresponding channel oc.
fortran_layout [Bigarray]
forward_tag [Obj]
fprintf [Printf]
fprintf outchan format arg1 ... argN formats the arguments arg1 to argN according to the format string format, and outputs the resulting string on the channel outchan.
fprintf [Format]
freeze_char_set [CamlinternalFormat]
frexp [Pervasives]
frexp f returns the pair of the significant and the exponent of f.
from [Stream]
Stream.from f returns a stream built from the function f.
from_bytes [Marshal]
Marshal.from_bytes buff ofs unmarshals a structured value like Marshal.from_channel does, except that the byte representation is not read from a channel, but taken from the byte sequence buff, starting at position ofs.
from_channel [Scanf.Scanning]
Scanning.from_channel ic returns a formatted input channel which reads from the regular input channel ic argument, starting at the current reading position.
from_channel [Marshal]
Marshal.from_channel chan reads from channel chan the byte representation of a structured value, as produced by one of the Marshal.to_* functions, and reconstructs and returns the corresponding value.
from_channel [Lexing]
Create a lexer buffer on the given input channel.
from_file [Scanf.Scanning]
An alias for open_in above.
from_file_bin [Scanf.Scanning]
An alias for open_in_bin above.
from_fun [Lazy]
from_fun f is the same as lazy (f ()) but slightly more efficient.
from_function [Scanf.Scanning]
Scanning.from_function f returns a formatted input channel with the given function as its reading method.
from_function [Lexing]
Create a lexer buffer with the given function as its reading method.
from_hex [Digest]
Convert a hexadecimal representation back into the corresponding digest.
from_string [Scanf.Scanning]
Scanning.from_string s returns a formatted input channel which reads from the given string.
from_string [Marshal]
Same as from_bytes but take a string as argument instead of a byte sequence.
from_string [Lexing]
Create a lexer buffer which reads from the given string.
from_val [Lazy]
from_val v returns an already-forced suspension of v.
fscanf [Scanf]
Same as Scanf.bscanf, but reads from the given regular input channel.
fst [Pervasives]
Return the first component of a pair.
fstat [Unix.LargeFile]
fstat [Unix]
Return the information for the file associated with the given descriptor.
ftruncate [Unix.LargeFile]
ftruncate [Unix]
Truncates the file corresponding to the given descriptor to the given size.
full_init [Random]
Same as Random.init but takes more data as seed.
full_major [Gc]
Do a minor collection, finish the current major collection cycle, and perform a complete new cycle.
full_split [Str]
Same as Str.split_delim, but returns the delimiters as well as the substrings contained between delimiters.
fun_ [Ast_helper.Cl]
fun_ [Ast_helper.Exp]
function_ [Ast_helper.Exp]
functor_ [Ast_helper.Mod]
functor_ [Ast_helper.Mty]

G
ge_num [Num]
genarray_of_array1 [Bigarray]
Return the generic big array corresponding to the given one-dimensional big array.
genarray_of_array2 [Bigarray]
Return the generic big array corresponding to the given two-dimensional big array.
genarray_of_array3 [Bigarray]
Return the generic big array corresponding to the given three-dimensional big array.
get [Bigarray.Array3]
Array3.get a x y z, also written a.{x,y,z}, returns the element of a at coordinates (x, y, z).
get [Bigarray.Array2]
Array2.get a x y, also written a.{x,y}, returns the element of a at coordinates (x, y).
get [Bigarray.Array1]
Array1.get a x, or alternatively a.{x}, returns the element of a at index x.
get [Bigarray.Genarray]
Read an element of a generic big array.
get [Weak]
Weak.get ar n returns None if the nth cell of ar is empty, Some x (where x is the value) if it is full.
get [String]
String.get s n returns the character at index n in string s.
get [StringLabels]
String.get s n returns the character at index n in string s.
get [Gc]
Return the current values of the GC parameters in a control record.
get [BytesLabels]
get s n returns the byte at index n in argument s.
get [Bytes]
get s n returns the byte at index n in argument s.
get [ArrayLabels]
ArrayLabels.get a n returns the element number n of array a.
get [Array]
Array.get a n returns the element number n of array a.
get_all_formatter_output_functions [Format]
get_backtrace [Printexc]
Printexc.get_backtrace () returns a string containing the same exception backtrace that Printexc.print_backtrace would print.
get_callstack [Printexc]
Printexc.get_callstack n returns a description of the top of the call stack on the current program point (for the current thread), with at most n entries.
get_cookie [Ast_mapper]
get_copy [Weak]
Weak.get_copy ar n returns None if the nth cell of ar is empty, Some x (where x is a (shallow) copy of the value) if it is full.
get_ellipsis_text [Format]
Return the text of the ellipsis.
get_formatter_out_functions [Format]
Return the current output functions of the pretty-printer, including line breaking and indentation functions.
get_formatter_output_functions [Format]
Return the current output functions of the pretty-printer.
get_formatter_tag_functions [Format]
Return the current tag functions of the pretty-printer.
get_margin [Format]
Returns the position of the right margin.
get_mark_tags [Format]
Return the current status of tags marking.
get_max_boxes [Format]
Returns the maximum number of boxes allowed before ellipsis.
get_max_indent [Format]
Return the value of the maximum indentation limit (in characters).
get_method [CamlinternalOO]
get_method_label [CamlinternalOO]
get_method_labels [CamlinternalOO]
get_pos_info [Location]
get_print_tags [Format]
Return the current status of tags printing.
get_public_method [CamlinternalOO]
get_raw_backtrace [Printexc]
Printexc.get_raw_backtrace () returns the same exception backtrace that Printexc.print_backtrace would print, but in a raw format.
get_raw_backtrace_slot [Printexc]
get_slot bckt pos returns the slot in position pos in the backtrace bckt.
get_state [Random]
Return the current state of the generator used by the basic functions.
get_temp_dir_name [Filename]
The name of the temporary directory: Under Unix, the value of the TMPDIR environment variable, or "/tmp" if the variable is not set.
get_variable [CamlinternalOO]
get_variables [CamlinternalOO]
getaddrinfo [Unix]
getaddrinfo host service opts returns a list of Unix.addr_info records describing socket parameters and addresses suitable for communicating with the given host and service.
getcwd [Unix]
Return the name of the current working directory.
getcwd [Sys]
Return the current working directory of the process.
getegid [Unix]
Return the effective group id under which the process runs.
getenv [Unix]
Return the value associated to a variable in the process environment.
getenv [Sys]
Return the value associated to a variable in the process environment.
geteuid [Unix]
Return the effective user id under which the process runs.
getgid [Unix]
Return the group id of the user executing the process.
getgrgid [Unix]
Find an entry in group with the given group id, or raise Not_found.
getgrnam [Unix]
Find an entry in group with the given name, or raise Not_found.
getgroups [Unix]
Return the list of groups to which the user executing the process belongs.
gethostbyaddr [Unix]
Find an entry in hosts with the given address, or raise Not_found.
gethostbyname [Unix]
Find an entry in hosts with the given name, or raise Not_found.
gethostname [Unix]
Return the name of the local host.
getitimer [Unix]
Return the current status of the given interval timer.
getlogin [Unix]
Return the login name of the user executing the process.
getnameinfo [Unix]
getnameinfo addr opts returns the host name and service name corresponding to the socket address addr.
getpeername [Unix]
Return the address of the host connected to the given socket.
getpid [Unix]
Return the pid of the process.
getppid [Unix]
Return the pid of the parent process.
getprotobyname [Unix]
Find an entry in protocols with the given name, or raise Not_found.
getprotobynumber [Unix]
Find an entry in protocols with the given protocol number, or raise Not_found.
getpwnam [Unix]
Find an entry in passwd with the given name, or raise Not_found.
getpwuid [Unix]
Find an entry in passwd with the given user id, or raise Not_found.
getservbyname [Unix]
Find an entry in services with the given name, or raise Not_found.
getservbyport [Unix]
Find an entry in services with the given service number, or raise Not_found.
getsockname [Unix]
Return the address of the given socket.
getsockopt [Unix]
Return the current status of a boolean-valued option in the given socket.
getsockopt_error [Unix]
Return the error condition associated with the given socket, and clear it.
getsockopt_float [Unix]
Same as Unix.getsockopt for a socket option whose value is a floating-point number.
getsockopt_int [Unix]
Same as Unix.getsockopt for an integer-valued socket option.
getsockopt_optint [Unix]
Same as Unix.getsockopt for a socket option whose value is an int option.
gettimeofday [Unix]
Same as Unix.time, but with resolution better than 1 second.
getuid [Unix]
Return the user id of the user executing the process.
global_replace [Str]
global_replace regexp templ s returns a string identical to s, except that all substrings of s that match regexp have been replaced by templ.
global_substitute [Str]
global_substitute regexp subst s returns a string identical to s, except that all substrings of s that match regexp have been replaced by the result of function subst.
gmtime [Unix]
Convert a time in seconds, as returned by Unix.time, into a date and a time.
group_beginning [Str]
group_beginning n returns the position of the first character of the substring that was matched by the nth group of the regular expression that was matched by the last call to a matching or searching function (see Str.matched_string for details).
group_end [Str]
group_end n returns the position of the character following the last character of substring that was matched by the nth group of the regular expression that was matched by the last call to a matching or searching function (see Str.matched_string for details).
gt_num [Num]

H
handle_unix_error [Unix]
handle_unix_error f x applies f to x and returns the result.
hash [MoreLabels.Hashtbl]
hash [Hashtbl.SeededHashedType]
A seeded hashing function on keys.
hash [Hashtbl.HashedType]
A hashing function on keys.
hash [Hashtbl]
Hashtbl.hash x associates a nonnegative integer to any value of any type.
hash_param [MoreLabels.Hashtbl]
hash_param [Hashtbl]
Hashtbl.hash_param meaningful total x computes a hash value for x, with the same properties as for hash.
hd [ListLabels]
Return the first element of the given list.
hd [List]
Return the first element of the given list.
header_size [Marshal]
The bytes representing a marshaled value are composed of a fixed-size header and a variable-sized data part, whose size can be determined from the header.
highlight_locations [Location]
hypot [Pervasives]
hypot x y returns sqrt(x *. x + y *. y), that is, the length of the hypotenuse of a right-angled triangle with sides of length x and y, or, equivalently, the distance of the point (x,y) to origin.

I
i [Complex]
The complex number i.
id [Oo]
Return an integer identifying this object, unique for the current execution of the program.
ident [Ast_helper.Mod]
ident [Ast_helper.Mty]
ident [Ast_helper.Exp]
ifprintf [Printf]
Same as Printf.fprintf, but does not print anything.
ifprintf [Format]
Same as fprintf above, but does not print anything.
ifthenelse [Ast_helper.Exp]
ignore [Pervasives]
Discard the value of its argument and return ().
ikfprintf [Printf]
Same as kfprintf above, but does not print anything.
ikfprintf [Format]
Same as kfprintf above, but does not print anything.
ill_formed_ast [Syntaxerr]
implementation [Printast]
implementation [Parser]
implementation [Parse]
in_channel_length [Pervasives.LargeFile]
in_channel_length [Pervasives]
Return the size (number of characters) of the regular file on which the given channel is opened.
in_channel_of_descr [Unix]
Create an input channel reading from the given descriptor.
in_comment [Lexer]
in_file [Location]
Return an empty ghost range located in a given file.
in_string [Lexer]
include_ [Ast_helper.Str]
include_ [Ast_helper.Sig]
incr [Pervasives]
Increment the integer contained in the given reference.
incr_num [Num]
incr r is r:=!r+1, where r is a reference to a number.
index [String]
String.index s c returns the index of the first occurrence of character c in string s.
index [StringLabels]
String.index s c returns the index of the first occurrence of character c in string s.
index [BytesLabels]
index s c returns the index of the first occurrence of byte c in s.
index [Bytes]
index s c returns the index of the first occurrence of byte c in s.
index_from [String]
String.index_from s i c returns the index of the first occurrence of character c in string s after position i.
index_from [StringLabels]
String.index_from s i c returns the index of the first occurrence of character c in string s after position i.
index_from [BytesLabels]
index_from s i c returns the index of the first occurrence of byte c in s after position i.
index_from [Bytes]
index_from s i c returns the index of the first occurrence of byte c in s after position i.
inet6_addr_any [Unix]
A special IPv6 address, for use only with bind, representing all the Internet addresses that the host machine possesses.
inet6_addr_loopback [Unix]
A special IPv6 address representing the host machine (::1).
inet_addr_any [Unix]
A special IPv4 address, for use only with bind, representing all the Internet addresses that the host machine possesses.
inet_addr_loopback [Unix]
A special IPv4 address representing the host machine (127.0.0.1).
inet_addr_of_string [Unix]
Conversion from the printable representation of an Internet address to its internal representation.
infinity [Pervasives]
Positive infinity.
infix_tag [Obj]
info_attr [Docstrings]
inherit_ [Ast_helper.Cf]
inherit_ [Ast_helper.Ctf]
inherits [CamlinternalOO]
init [Location]
Set the file name and line number of the lexbuf to be the start of the named file.
init [Lexer]
init [Docstrings]
init [String]
String.init n f returns a string of length n, with character i initialized to the result of f i (called in increasing index order).
init [StringLabels]
init n f returns a string of length n, with character i initialized to the result of f i.
init [Random]
Initialize the generator, using the argument as a seed.
init [BytesLabels]
init n f returns a fresh byte sequence of length n, with character i initialized to the result of f i.
init [Bytes]
Bytes.init n f returns a fresh byte sequence of length n, with character i initialized to the result of f i (in increasing index order).
init [ArrayLabels]
ArrayLabels.init n f returns a fresh array of length n, with element number i initialized to the result of f i.
init [Array]
Array.init n f returns a fresh array of length n, with element number i initialized to the result of f i.
init_class [CamlinternalOO]
init_mod [CamlinternalMod]
initgroups [Unix]
initgroups user group initializes the group access list by reading the group database /etc/group and using all groups of which user is a member.
initializer_ [Ast_helper.Cf]
input [Pervasives]
input ic buf pos len reads up to len characters from the given channel ic, storing them in byte sequence buf, starting at character number pos.
input [Digest]
Read a digest from the given input channel.
input_binary_int [Pervasives]
Read an integer encoded in binary format (4 bytes, big-endian) from the given input channel.
input_byte [Pervasives]
Same as Pervasives.input_char, but return the 8-bit integer representing the character.
input_char [Pervasives]
Read one character from the given input channel.
input_lexbuf [Location]
input_line [Pervasives]
Read characters from the given input channel, until a newline character is encountered.
input_name [Location]
input_value [Pervasives]
Read the representation of a structured value, as produced by Pervasives.output_value, and return the corresponding value.
int [Bigarray]
int [Random.State]
int [Random]
Random.int bound returns a random integer between 0 (inclusive) and bound (exclusive).
int16_signed [Bigarray]
int16_unsigned [Bigarray]
int32 [Bigarray]
int32 [Random.State]
int32 [Random]
Random.int32 bound returns a random integer between 0 (inclusive) and bound (exclusive).
int64 [Bigarray]
int64 [Random.State]
int64 [Random]
Random.int64 bound returns a random integer between 0 (inclusive) and bound (exclusive).
int8_signed [Bigarray]
int8_unsigned [Bigarray]
int_of_char [Pervasives]
Return the ASCII code of the argument.
int_of_float [Pervasives]
Truncate the given floating-point number to an integer.
int_of_num [Num]
int_of_string [Pervasives]
Convert the given string to an integer.
int_tag [Obj]
integer_num [Num]
integer_num n returns the integer closest to n.
inter [Set.S]
Set intersection.
inter [MoreLabels.Set.S]
interactive [Sys]
This reference is initially set to false in standalone programs and to true if the code is being executed under the interactive toplevel system ocaml.
interface [Printast]
interface [Parser]
interface [Parse]
interval [Ast_helper.Pat]
inv [Complex]
Multiplicative inverse (1/z).
invalid_arg [Pervasives]
Raise exception Invalid_argument with the given string.
is_block [Obj]
is_directory [Sys]
Returns true if the given name refers to a directory, false if it refers to another kind of file.
is_empty [Stack]
Return true if the given stack is empty, false otherwise.
is_empty [Set.S]
Test whether a set is empty or not.
is_empty [Queue]
Return true if the given queue is empty, false otherwise.
is_empty [MoreLabels.Set.S]
is_empty [MoreLabels.Map.S]
is_empty [Map.S]
Test whether a map is empty or not.
is_implicit [Filename]
Return true if the file name is relative and does not start with an explicit reference to the current directory (./ or ../ in Unix), false if it starts with an explicit reference to the root directory or the current directory.
is_in_char_set [CamlinternalFormat]
is_int [Obj]
is_integer_num [Num]
Test if a number is an integer
is_raise [Printexc.Slot]
is_raise slot is true when slot refers to a raising point in the code, and false when it comes from a simple function call.
is_relative [Filename]
Return true if the file name is relative to the current directory, false if it is absolute (i.e.
is_val [Lazy]
is_val x returns true if x has already been forced and did not raise an exception.
isatty [Unix]
Return true if the given file descriptor refers to a terminal or console window, false otherwise.
iter [Weak.S]
iter f t calls f on each element of t, in some unspecified order.
iter [String]
String.iter f s applies function f in turn to all the characters of s.
iter [Stream]
Stream.iter f s scans the whole stream s, applying function f in turn to each stream element encountered.
iter [StringLabels]
String.iter f s applies function f in turn to all the characters of s.
iter [Stack]
iter f s applies f in turn to all elements of s, from the element at the top of the stack to the element at the bottom of the stack.
iter [Set.S]
iter f s applies f in turn to all elements of s.
iter [Queue]
iter f q applies f in turn to all elements of q, from the least recently entered to the most recently entered.
iter [MoreLabels.Set.S]
iter [MoreLabels.Map.S]
iter [MoreLabels.Hashtbl.SeededS]
iter [MoreLabels.Hashtbl.S]
iter [MoreLabels.Hashtbl]
iter [Map.S]
iter f m applies f to all bindings in map m.
iter [ListLabels]
ListLabels.iter f [a1; ...; an] applies function f in turn to a1; ...; an.
iter [List]
List.iter f [a1; ...; an] applies function f in turn to a1; ...; an.
iter [Hashtbl.SeededS]
iter [Hashtbl.S]
iter [Hashtbl]
Hashtbl.iter f tbl applies f to all bindings in table tbl.
iter [BytesLabels]
iter f s applies function f in turn to all the bytes of s.
iter [Bytes]
iter f s applies function f in turn to all the bytes of s.
iter [ArrayLabels]
ArrayLabels.iter f a applies function f in turn to all the elements of a.
iter [Array]
Array.iter f a applies function f in turn to all the elements of a.
iter2 [ListLabels]
ListLabels.iter2 f [a1; ...; an] [b1; ...; bn] calls in turn f a1 b1; ...; f an bn.
iter2 [List]
List.iter2 f [a1; ...; an] [b1; ...; bn] calls in turn f a1 b1; ...; f an bn.
iteri [String]
Same as String.iter, but the function is applied to the index of the element as first argument (counting from 0), and the character itself as second argument.
iteri [StringLabels]
Same as String.iter, but the function is applied to the index of the element as first argument (counting from 0), and the character itself as second argument.
iteri [ListLabels]
Same as ListLabels.iter, but the function is applied to the index of the element as first argument (counting from 0), and the element itself as second argument.
iteri [List]
Same as List.iter, but the function is applied to the index of the element as first argument (counting from 0), and the element itself as second argument.
iteri [BytesLabels]
Same as Bytes.iter, but the function is applied to the index of the byte as first argument and the byte itself as second argument.
iteri [Bytes]
Same as Bytes.iter, but the function is applied to the index of the byte as first argument and the byte itself as second argument.
iteri [ArrayLabels]
Same as ArrayLabels.iter, but the function is applied to the index of the element as first argument, and the element itself as second argument.
iteri [Array]
Same as Array.iter, but the function is applied to the index of the element as first argument, and the element itself as second argument.

J
junk [Stream]
Remove the first element of the stream, possibly unfreezing it before.

K
kbprintf [Printf]
Same as bprintf, but instead of returning immediately, passes the buffer to its first argument at the end of printing.
kfprintf [Printf]
Same as fprintf, but instead of returning immediately, passes the out channel to its first argument at the end of printing.
kfprintf [Format]
Same as fprintf above, but instead of returning immediately, passes the formatter to its first argument at the end of printing.
kfscanf [Scanf]
Same as Scanf.kscanf, but reads from the given regular input channel.
kill [Unix]
kill pid sig sends signal number sig to the process with id pid.
kind [Bigarray.Array3]
Return the kind of the given big array.
kind [Bigarray.Array2]
Return the kind of the given big array.
kind [Bigarray.Array1]
Return the kind of the given big array.
kind [Bigarray.Genarray]
Return the kind of the given big array.
kprintf [Printf]
A deprecated synonym for ksprintf.
kprintf [Format]
kscanf [Scanf]
Same as Scanf.bscanf, but takes an additional function argument ef that is called in case of error: if the scanning process or some conversion fails, the scanning function aborts and calls the error handling function ef with the formatted input channel and the exception that aborted the scanning process as arguments.
ksprintf [Printf]
Same as sprintf above, but instead of returning the string, passes it to the first argument.
ksprintf [Format]
Same as sprintf above, but instead of returning the string, passes it to the first argument.
ksscanf [Scanf]
Same as Scanf.kscanf but reads from the given string.

L
last [Longident]
last_chars [Str]
last_chars s n returns the last n characters of s.
last_non_constant_constructor_tag [Obj]
layout [Bigarray.Array3]
Return the layout of the given big array.
layout [Bigarray.Array2]
Return the layout of the given big array.
layout [Bigarray.Array1]
Return the layout of the given big array.
layout [Bigarray.Genarray]
Return the layout of the given big array.
lazy_ [Ast_helper.Exp]
lazy_ [Ast_helper.Pat]
lazy_from_fun [Lazy]
lazy_from_val [Lazy]
lazy_is_val [Lazy]
lazy_tag [Obj]
ldexp [Pervasives]
ldexp x n returns x *. 2 ** n.
le_num [Num]
length [Weak]
Weak.length ar returns the length (number of elements) of ar.
length [String]
Return the length (number of characters) of the given string.
length [StringLabels]
Return the length (number of characters) of the given string.
length [Stack]
Return the number of elements in a stack.
length [Queue]
Return the number of elements in a queue.
length [MoreLabels.Hashtbl.SeededS]
length [MoreLabels.Hashtbl.S]
length [MoreLabels.Hashtbl]
length [ListLabels]
Return the length (number of elements) of the given list.
length [List]
Return the length (number of elements) of the given list.
length [Hashtbl.SeededS]
length [Hashtbl.S]
length [Hashtbl]
Hashtbl.length tbl returns the number of bindings in tbl.
length [BytesLabels]
Return the length (number of bytes) of the argument.
length [Bytes]
Return the length (number of bytes) of the argument.
length [Buffer]
Return the number of characters currently contained in the buffer.
length [ArrayLabels]
Return the length (number of elements) of the given array.
length [Array]
Return the length (number of elements) of the given array.
let_ [Ast_helper.Cl]
let_ [Ast_helper.Exp]
letmodule [Ast_helper.Exp]
lexeme [Lexing]
Lexing.lexeme lexbuf returns the string matched by the regular expression.
lexeme_char [Lexing]
Lexing.lexeme_char lexbuf i returns character number i in the matched string.
lexeme_end [Lexing]
Lexing.lexeme_end lexbuf returns the offset in the input stream of the character following the last character of the matched string.
lexeme_end_p [Lexing]
Like lexeme_end, but return a complete position instead of an offset.
lexeme_start [Lexing]
Lexing.lexeme_start lexbuf returns the offset in the input stream of the first character of the matched string.
lexeme_start_p [Lexing]
Like lexeme_start, but return a complete position instead of an offset.
link [Unix]
link source dest creates a hard link named dest to the file named source.
list [Sort]
Sort a list in increasing order according to an ordering predicate.
listen [Unix]
Set up a socket for receiving connection requests.
lnot [Pervasives]
Bitwise logical negation.
localtime [Unix]
Convert a time in seconds, as returned by Unix.time, into a date and a time.
location [Printexc.Slot]
location slot returns the location information of the slot, if available, and None otherwise.
location_of_error [Syntaxerr]
lockf [Unix]
lockf fd cmd size puts a lock on a region of the file opened as fd.
log [Pervasives]
Natural logarithm.
log [Complex]
Natural logarithm (in base e).
log10 [Pervasives]
Base 10 logarithm.
log1p [Pervasives]
log1p x computes log(1.0 +. x) (natural logarithm), giving numerically-accurate results even if x is close to 0.0.
logand [Nativeint]
Bitwise logical and.
logand [Int64]
Bitwise logical and.
logand [Int32]
Bitwise logical and.
lognot [Nativeint]
Bitwise logical negation
lognot [Int64]
Bitwise logical negation
lognot [Int32]
Bitwise logical negation
logor [Nativeint]
Bitwise logical or.
logor [Int64]
Bitwise logical or.
logor [Int32]
Bitwise logical or.
logxor [Nativeint]
Bitwise logical exclusive or.
logxor [Int64]
Bitwise logical exclusive or.
logxor [Int32]
Bitwise logical exclusive or.
lookup_tables [CamlinternalOO]
lowercase [String]
Return a copy of the argument, with all uppercase letters translated to lowercase, including accented letters of the ISO Latin-1 (8859-1) character set.
lowercase [StringLabels]
Return a copy of the argument, with all uppercase letters translated to lowercase, including accented letters of the ISO Latin-1 (8859-1) character set.
lowercase [Char]
Convert the given character to its equivalent lowercase character.
lowercase [BytesLabels]
Return a copy of the argument, with all uppercase letters translated to lowercase, including accented letters of the ISO Latin-1 (8859-1) character set.
lowercase [Bytes]
Return a copy of the argument, with all uppercase letters translated to lowercase, including accented letters of the ISO Latin-1 (8859-1) character set.
lseek [Unix.LargeFile]
lseek [Unix]
Set the current position for a file descriptor, and return the resulting offset (from the beginning of the file).
lstat [Unix.LargeFile]
lstat [Unix]
Same as Unix.stat, but in case the file is a symbolic link, return the information for the link itself.
lt_num [Num]

M
magic [Obj]
major [Gc]
Do a minor collection and finish the current major collection cycle.
major_slice [Gc]
Do a minor collection and a slice of major collection.
make [String]
String.make n c returns a fresh string of length n, filled with the character c.
make [StringLabels]
String.make n c returns a fresh string of length n, filled with the character c.
make [Random.State]
Create a new state and initialize it with the given seed.
make [BytesLabels]
make n c returns a new byte sequence of length n, filled with the byte c.
make [Bytes]
make n c returns a new byte sequence of length n, filled with the byte c.
make [ArrayLabels]
ArrayLabels.make n x returns a fresh array of length n, initialized with x.
make [Array]
Array.make n x returns a fresh array of length n, initialized with x.
make_class [CamlinternalOO]
make_class_store [CamlinternalOO]
make_float [Array]
Array.make_float n returns a fresh float array of length n, with uninitialized data.
make_formatter [Format]
make_formatter out flush returns a new formatter that writes according to the output function out, and the flushing function flush.
make_lexer [Genlex]
Construct the lexer function.
make_matrix [ArrayLabels]
ArrayLabels.make_matrix dimx dimy e returns a two-dimensional array (an array of arrays) with first dimension dimx and second dimension dimy.
make_matrix [Array]
Array.make_matrix dimx dimy e returns a two-dimensional array (an array of arrays) with first dimension dimx and second dimension dimy.
make_printf [CamlinternalFormat]
make_self_init [Random.State]
Create a new state and initialize it with a system-dependent low-entropy seed.
map [String]
String.map f s applies function f in turn to all the characters of s (in increasing index order) and stores the results in a new string that is returned.
map [StringLabels]
String.map f s applies function f in turn to all the characters of s and stores the results in a new string that is returned.
map [MoreLabels.Map.S]
map [Map.S]
map f m returns a map with same domain as m, where the associated value a of all bindings of m has been replaced by the result of the application of f to a.
map [ListLabels]
ListLabels.map f [a1; ...; an] applies function f to a1, ..., an, and builds the list [f a1; ...; f an] with the results returned by f.
map [List]
List.map f [a1; ...; an] applies function f to a1, ..., an, and builds the list [f a1; ...; f an] with the results returned by f.
map [BytesLabels]
map f s applies function f in turn to all the bytes of s and stores the resulting bytes in a new sequence that is returned as the result.
map [Bytes]
map f s applies function f in turn to all the bytes of s (in increasing index order) and stores the resulting bytes in a new sequence that is returned as the result.
map [ArrayLabels]
ArrayLabels.map f a applies function f to all the elements of a, and builds an array with the results returned by f: [| f a.(0); f a.(1); ...; f a.(ArrayLabels.length a - 1) |].
map [Array]
Array.map f a applies function f to all the elements of a, and builds an array with the results returned by f: [| f a.(0); f a.(1); ...; f a.(Array.length a - 1) |].
map2 [ListLabels]
ListLabels.map2 f [a1; ...; an] [b1; ...; bn] is [f a1 b1; ...; f an bn].
map2 [List]
List.map2 f [a1; ...; an] [b1; ...; bn] is [f a1 b1; ...; f an bn].
map_file [Bigarray.Array3]
Memory mapping of a file as a three-dimensional big array.
map_file [Bigarray.Array2]
Memory mapping of a file as a two-dimensional big array.
map_file [Bigarray.Array1]
Memory mapping of a file as a one-dimensional big array.
map_file [Bigarray.Genarray]
Memory mapping of a file as a big array.
map_opt [Ast_mapper]
mapi [String]
String.mapi f s calls f with each character of s and its index (in increasing index order) and stores the results in a new string that is returned.
mapi [StringLabels]
String.mapi f s calls f with each character of s and its index (in increasing index order) and stores the results in a new string that is returned.
mapi [MoreLabels.Map.S]
mapi [Map.S]
Same as Map.S.map, but the function receives as arguments both the key and the associated value for each binding of the map.
mapi [ListLabels]
Same as ListLabels.map, but the function is applied to the index of the element as first argument (counting from 0), and the element itself as second argument.
mapi [List]
Same as List.map, but the function is applied to the index of the element as first argument (counting from 0), and the element itself as second argument.
mapi [BytesLabels]
mapi f s calls f with each character of s and its index (in increasing index order) and stores the resulting bytes in a new sequence that is returned as the result.
mapi [Bytes]
mapi f s calls f with each character of s and its index (in increasing index order) and stores the resulting bytes in a new sequence that is returned as the result.
mapi [ArrayLabels]
Same as ArrayLabels.map, but the function is applied to the index of the element as first argument, and the element itself as second argument.
mapi [Array]
Same as Array.map, but the function is applied to the index of the element as first argument, and the element itself as second argument.
mark_rhs_docs [Docstrings]
Mark as associated the item documentation for the symbols between two positions (for ambiguity warnings)
mark_symbol_docs [Docstrings]
Mark the item documentation for the current symbol (for ambiguity warnings).
marshal [Obj]
match_ [Ast_helper.Exp]
match_beginning [Str]
match_beginning() returns the position of the first character of the substring that was matched by the last call to a matching or searching function (see Str.matched_string for details).
match_end [Str]
match_end() returns the position of the character following the last character of the substring that was matched by the last call to a matching or searching function (see Str.matched_string for details).
matched_group [Str]
matched_group n s returns the substring of s that was matched by the nth group \(...\) of the regular expression that was matched by the last call to a matching or searching function (see Str.matched_string for details).
matched_string [Str]
matched_string s returns the substring of s that was matched by the last call to one of the following matching or searching functions: Str.string_match, Str.search_forward, Str.search_backward, Str.string_partial_match, Str.global_substitute, Str.substitute_first provided that none of the following functions was called inbetween: Str.global_replace, Str.replace_first, Str.split, Str.bounded_split, Str.split_delim, Str.bounded_split_delim, Str.full_split, Str.bounded_full_split Note: in the case of global_substitute and substitute_first, a call to matched_string is only valid within the subst argument, not after global_substitute or substitute_first returns.
max [Pervasives]
Return the greater of the two arguments.
max_array_length [Sys]
Maximum length of a normal array.
max_binding [MoreLabels.Map.S]
max_binding [Map.S]
Same as Map.S.min_binding, but returns the largest binding of the given map.
max_elt [Set.S]
Same as Set.S.min_elt, but returns the largest element of the given set.
max_elt [MoreLabels.Set.S]
max_float [Pervasives]
The largest positive finite value of type float.
max_int [Pervasives]
The greatest representable integer.
max_int [Nativeint]
The greatest representable native integer, either 231 - 1 on a 32-bit platform, or 263 - 1 on a 64-bit platform.
max_int [Int64]
The greatest representable 64-bit integer, 263 - 1.
max_int [Int32]
The greatest representable 32-bit integer, 231 - 1.
max_num [Num]
Return the greater of the two arguments.
max_string_length [Sys]
Maximum length of strings and byte sequences.
mem [Weak.S]
mem t x returns true if there is at least one instance of x in t, false otherwise.
mem [Set.S]
mem x s tests whether x belongs to the set s.
mem [MoreLabels.Set.S]
mem [MoreLabels.Map.S]
mem [MoreLabels.Hashtbl.SeededS]
mem [MoreLabels.Hashtbl.S]
mem [MoreLabels.Hashtbl]
mem [Map.S]
mem x m returns true if m contains a binding for x, and false otherwise.
mem [ListLabels]
mem a l is true if and only if a is equal to an element of l.
mem [List]
mem a l is true if and only if a is equal to an element of l.
mem [Hashtbl.SeededS]
mem [Hashtbl.S]
mem [Hashtbl]
Hashtbl.mem tbl x checks if x is bound in tbl.
mem_assoc [ListLabels]
Same as ListLabels.assoc, but simply return true if a binding exists, and false if no bindings exist for the given key.
mem_assoc [List]
Same as List.assoc, but simply return true if a binding exists, and false if no bindings exist for the given key.
mem_assq [ListLabels]
Same as ListLabels.mem_assoc, but uses physical equality instead of structural equality to compare keys.
mem_assq [List]
Same as List.mem_assoc, but uses physical equality instead of structural equality to compare keys.
memq [ListLabels]
Same as ListLabels.mem, but uses physical equality instead of structural equality to compare list elements.
memq [List]
Same as List.mem, but uses physical equality instead of structural equality to compare list elements.
merge [Weak.S]
merge t x returns an instance of x found in t if any, or else adds x to t and return x.
merge [Sort]
Merge two lists according to the given predicate.
merge [MoreLabels.Map.S]
merge [Map.S]
merge f m1 m2 computes a map whose keys is a subset of keys of m1 and of m2.
merge [ListLabels]
Merge two lists: Assuming that l1 and l2 are sorted according to the comparison function cmp, merge cmp l1 l2 will return a sorted list containting all the elements of l1 and l2.
merge [List]
Merge two lists: Assuming that l1 and l2 are sorted according to the comparison function cmp, merge cmp l1 l2 will return a sorted list containting all the elements of l1 and l2.
method_ [Ast_helper.Cf]
method_ [Ast_helper.Ctf]
min [Pervasives]
Return the smaller of the two arguments.
min_binding [MoreLabels.Map.S]
min_binding [Map.S]
Return the smallest binding of the given map (with respect to the Ord.compare ordering), or raise Not_found if the map is empty.
min_elt [Set.S]
Return the smallest element of the given set (with respect to the Ord.compare ordering), or raise Not_found if the set is empty.
min_elt [MoreLabels.Set.S]
min_float [Pervasives]
The smallest positive, non-zero, non-denormalized value of type float.
min_int [Pervasives]
The smallest representable integer.
min_int [Nativeint]
The greatest representable native integer, either -231 on a 32-bit platform, or -263 on a 64-bit platform.
min_int [Int64]
The smallest representable 64-bit integer, -263.
min_int [Int32]
The smallest representable 32-bit integer, -231.
min_num [Num]
Return the smaller of the two arguments.
minor [Gc]
Trigger a minor collection.
minus_num [Num]
Unary negation.
minus_one [Nativeint]
The native integer -1.
minus_one [Int64]
The 64-bit integer -1.
minus_one [Int32]
The 32-bit integer -1.
mk [Ast_helper.Cstr]
mk [Ast_helper.Csig]
mk [Ast_helper.Ci]
mk [Ast_helper.Cf]
mk [Ast_helper.Cl]
mk [Ast_helper.Ctf]
mk [Ast_helper.Cty]
mk [Ast_helper.Vb]
mk [Ast_helper.Incl]
mk [Ast_helper.Opn]
mk [Ast_helper.Mb]
mk [Ast_helper.Mtd]
mk [Ast_helper.Md]
mk [Ast_helper.Str]
mk [Ast_helper.Sig]
mk [Ast_helper.Mod]
mk [Ast_helper.Mty]
mk [Ast_helper.Te]
mk [Ast_helper.Type]
mk [Ast_helper.Val]
mk [Ast_helper.Exp]
mk [Ast_helper.Pat]
mk [Ast_helper.Typ]
mkdir [Unix]
Create a directory with the given permissions (see Unix.umask).
mkfifo [Unix]
Create a named pipe with the given permissions (see Unix.umask).
mkloc [Location]
mknoloc [Location]
mktime [Unix]
Convert a date and time, specified by the tm argument, into a time in seconds, as returned by Unix.time.
mod_float [Pervasives]
mod_float a b returns the remainder of a with respect to b.
mod_num [Num]
Euclidean division: remainder.
modf [Pervasives]
modf f returns the pair of the fractional and integral part of f.
modtype [Ast_helper.Str]
modtype [Ast_helper.Sig]
module_ [Ast_helper.Str]
module_ [Ast_helper.Sig]
mul [Nativeint]
Multiplication.
mul [Int64]
Multiplication.
mul [Int32]
Multiplication.
mul [Complex]
Multiplication
mult_num [Num]
Multiplication

N
name_of_input [Scanf.Scanning]
Scanning.name_of_input ic returns the name of the character source for the formatted input channel ic.
nan [Pervasives]
A special floating-point value denoting the result of an undefined operation such as 0.0 /. 0.0.
narrow [CamlinternalOO]
nat_of_num [Num]
nativeint [Bigarray]
nativeint [Random.State]
nativeint [Random]
Random.nativeint bound returns a random integer between 0 (inclusive) and bound (exclusive).
neg [Nativeint]
Unary negation.
neg [Int64]
Unary negation.
neg [Int32]
Unary negation.
neg [Complex]
Unary negation.
neg_infinity [Pervasives]
Negative infinity.
new_ [Ast_helper.Exp]
new_block [Obj]
new_line [Lexing]
Update the lex_curr_p field of the lexbuf to reflect the start of a new line.
new_method [CamlinternalOO]
new_methods_variables [CamlinternalOO]
new_variable [CamlinternalOO]
newtype [Ast_helper.Exp]
next [Stream]
Return the first element of the stream and remove it from the stream.
nice [Unix]
Change the process priority.
no_scan_tag [Obj]
none [Location]
An arbitrary value of type t; describes an empty ghost range.
norm [Complex]
Norm: given x + i.y, returns sqrt(x^2 + y^2).
norm2 [Complex]
Norm squared: given x + i.y, returns x^2 + y^2.
not [Pervasives]
The boolean negation.
npeek [Stream]
npeek n returns the list of the n first elements of the stream, or all its remaining elements if less than n elements are available.
nth [ListLabels]
Return the n-th element of the given list.
nth [List]
Return the n-th element of the given list.
nth [Buffer]
get the n-th character of the buffer.
nth_dim [Bigarray.Genarray]
Genarray.nth_dim a n returns the n-th dimension of the big array a.
num_dims [Bigarray.Genarray]
Return the number of dimensions of the given big array.
num_of_big_int [Num]
num_of_int [Num]
num_of_nat [Num]
num_of_ratio [Num]
num_of_string [Num]
Convert a string to a number.

O
obj [Obj]
object_ [Ast_helper.Exp]
object_ [Ast_helper.Typ]
object_tag [Obj]
ocaml_version [Sys]
ocaml_version is the version of OCaml.
of_array [Bigarray.Array3]
Build a three-dimensional big array initialized from the given array of arrays of arrays.
of_array [Bigarray.Array2]
Build a two-dimensional big array initialized from the given array of arrays.
of_array [Bigarray.Array1]
Build a one-dimensional big array initialized from the given array.
of_bytes [Stream]
Return the stream of the characters of the bytes parameter.
of_channel [Stream]
Return the stream of the characters read from the input channel.
of_float [Nativeint]
Convert the given floating-point number to a native integer, discarding the fractional part (truncate towards 0).
of_float [Int64]
Convert the given floating-point number to a 64-bit integer, discarding the fractional part (truncate towards 0).
of_float [Int32]
Convert the given floating-point number to a 32-bit integer, discarding the fractional part (truncate towards 0).
of_int [Nativeint]
Convert the given integer (type int) to a native integer (type nativeint).
of_int [Int64]
Convert the given integer (type int) to a 64-bit integer (type int64).
of_int [Int32]
Convert the given integer (type int) to a 32-bit integer (type int32).
of_int32 [Nativeint]
Convert the given 32-bit integer (type int32) to a native integer.
of_int32 [Int64]
Convert the given 32-bit integer (type int32) to a 64-bit integer (type int64).
of_list [Stream]
Return the stream holding the elements of the list in the same order.
of_list [Set.S]
of_list l creates a set from a list of elements.
of_list [MoreLabels.Set.S]
of_list [ArrayLabels]
ArrayLabels.of_list l returns a fresh array containing the elements of l.
of_list [Array]
Array.of_list l returns a fresh array containing the elements of l.
of_nativeint [Int64]
Convert the given native integer (type nativeint) to a 64-bit integer (type int64).
of_string [Stream]
Return the stream of the characters of the string parameter.
of_string [Nativeint]
Convert the given string to a native integer.
of_string [Int64]
Convert the given string to a 64-bit integer.
of_string [Int32]
Convert the given string to a 32-bit integer.
of_string [BytesLabels]
Return a new byte sequence that contains the same bytes as the given string.
of_string [Bytes]
Return a new byte sequence that contains the same bytes as the given string.
one [Nativeint]
The native integer 1.
one [Int64]
The 64-bit integer 1.
one [Int32]
The 32-bit integer 1.
one [Complex]
The complex number 1.
open_ [Ast_helper.Str]
open_ [Ast_helper.Sig]
open_ [Ast_helper.Exp]
open_box [Format]
open_box d opens a new pretty-printing box with offset d.
open_box_of_string [CamlinternalFormat]
open_connection [Unix]
Connect to a server at the given address.
open_hbox [Format]
open_hbox () opens a new pretty-printing box.
open_hovbox [Format]
open_hovbox d opens a new pretty-printing box with offset d.
open_hvbox [Format]
open_hvbox d opens a new pretty-printing box with offset d.
open_in [Scanf.Scanning]
Scanning.open_in fname returns a formatted input channel for bufferized reading in text mode from file fname.
open_in [Pervasives]
Open the named file for reading, and return a new input channel on that file, positionned at the beginning of the file.
open_in_bin [Scanf.Scanning]
Scanning.open_in_bin fname returns a formatted input channel for bufferized reading in binary mode from file fname.
open_in_bin [Pervasives]
Same as Pervasives.open_in, but the file is opened in binary mode, so that no translation takes place during reads.
open_in_gen [Pervasives]
open_in_gen mode perm filename opens the named file for reading, as described above.
open_out [Pervasives]
Open the named file for writing, and return a new output channel on that file, positionned at the beginning of the file.
open_out_bin [Pervasives]
Same as Pervasives.open_out, but the file is opened in binary mode, so that no translation takes place during writes.
open_out_gen [Pervasives]
open_out_gen mode perm filename opens the named file for writing, as described above.
open_process [Unix]
Same as Unix.open_process_out, but redirects both the standard input and standard output of the command to pipes connected to the two returned channels.
open_process_full [Unix]
Similar to Unix.open_process, but the second argument specifies the environment passed to the command.
open_process_in [Unix]
High-level pipe and process management.
open_process_out [Unix]
Same as Unix.open_process_in, but redirect the standard input of the command to a pipe.
open_tag [Format]
open_tag t opens the tag named t; the print_open_tag function of the formatter is called with t as argument; the tag marker mark_open_tag t will be flushed into the output device of the formatter.
open_tbox [Format]
Opens a tabulation box.
open_temp_file [Filename]
Same as Filename.temp_file, but returns both the name of a fresh temporary file, and an output channel opened (atomically) on this file.
open_vbox [Format]
open_vbox d opens a new pretty-printing box with offset d.
opendir [Unix]
Open a descriptor on a directory
openfile [Unix]
Open the named file with the given flags.
or_ [Ast_helper.Pat]
os_type [Sys]
Operating system currently executing the OCaml program.
out_channel_length [Pervasives.LargeFile]
out_channel_length [Pervasives]
Return the size (number of characters) of the regular file on which the given channel is opened.
out_channel_of_descr [Unix]
Create an output channel writing on the given descriptor.
out_of_heap_tag [Obj]
output [Pervasives]
output oc buf pos len writes len characters from byte sequence buf, starting at offset pos, to the given output channel oc.
output [Digest]
Write a digest on the given output channel.
output_acc [CamlinternalFormat]
output_binary_int [Pervasives]
Write one integer in binary format (4 bytes, big-endian) on the given output channel.
output_buffer [Buffer]
output_buffer oc b writes the current contents of buffer b on the output channel oc.
output_byte [Pervasives]
Write one 8-bit integer (as the single character with that code) on the given output channel.
output_bytes [Pervasives]
Write the byte sequence on the given output channel.
output_char [Pervasives]
Write the character on the given output channel.
output_string [Pervasives]
Write the string on the given output channel.
output_substring [Pervasives]
Same as output but take a string as argument instead of a byte sequence.
output_value [Pervasives]
Write the representation of a structured value of any type to a channel.
over_max_boxes [Format]
Tests if the maximum number of boxes allowed have already been opened.
override [Ast_helper.Exp]

P
pack [Ast_helper.Exp]
package [Ast_helper.Typ]
param_format_of_ignored_format [CamlinternalFormat]
params [CamlinternalOO]
parent_dir_name [Filename]
The conventional name for the parent of the current directory (e.g.
parse [Longident]
parse [Arg]
Arg.parse speclist anon_fun usage_msg parses the command line.
parse_argv [Arg]
Arg.parse_argv ~current args speclist anon_fun usage_msg parses the array args as if it were the command line.
parse_argv_dynamic [Arg]
Same as Arg.parse_argv, except that the speclist argument is a reference and may be updated during the parsing.
parse_core_type [Parser]
parse_dynamic [Arg]
Same as Arg.parse, except that the speclist argument is a reference and may be updated during the parsing.
parse_expression [Parser]
parse_pattern [Parser]
partition [Set.S]
partition p s returns a pair of sets (s1, s2), where s1 is the set of all the elements of s that satisfy the predicate p, and s2 is the set of all the elements of s that do not satisfy p.
partition [MoreLabels.Set.S]
partition [MoreLabels.Map.S]
partition [Map.S]
partition p m returns a pair of maps (m1, m2), where m1 contains all the bindings of s that satisfy the predicate p, and m2 is the map with all the bindings of s that do not satisfy p.
partition [ListLabels]
partition p l returns a pair of lists (l1, l2), where l1 is the list of all the elements of l that satisfy the predicate p, and l2 is the list of all the elements of l that do not satisfy p.
partition [List]
partition p l returns a pair of lists (l1, l2), where l1 is the list of all the elements of l that satisfy the predicate p, and l2 is the list of all the elements of l that do not satisfy p.
pattern [Pprintast]
pattern [Parse]
pause [Unix]
Wait until a non-ignored, non-blocked signal is delivered.
payload [Printast]
peek [Stream]
Return Some of "the first element" of the stream, or None if the stream is empty.
peek [Queue]
peek q returns the first element in queue q, without removing it from the queue, or raises Empty if the queue is empty.
pipe [Unix]
Create a pipe.
polar [Complex]
polar norm arg returns the complex having norm norm and argument arg.
poly [Ast_helper.Exp]
poly [Ast_helper.Typ]
pop [Stack]
pop s removes and returns the topmost element in stack s, or raises Empty if the stack is empty.
pop [Queue]
pop is a synonym for take.
pos_in [Pervasives.LargeFile]
pos_in [Pervasives]
Return the current reading position for the given channel.
pos_out [Pervasives.LargeFile]
pos_out [Pervasives]
Return the current writing position for the given channel.
pow [Complex]
Power function.
power_num [Num]
Exponentiation
pp_close_box [Format]
pp_close_tag [Format]
pp_close_tbox [Format]
pp_force_newline [Format]
pp_get_all_formatter_output_functions [Format]
pp_get_ellipsis_text [Format]
pp_get_formatter_out_functions [Format]
These functions are the basic ones: usual functions operating on the standard formatter are defined via partial evaluation of these primitives.
pp_get_formatter_output_functions [Format]
pp_get_formatter_tag_functions [Format]
pp_get_margin [Format]
pp_get_mark_tags [Format]
pp_get_max_boxes [Format]
pp_get_max_indent [Format]
pp_get_print_tags [Format]
pp_open_box [Format]
pp_open_hbox [Format]
pp_open_hovbox [Format]
pp_open_hvbox [Format]
pp_open_tag [Format]
pp_open_tbox [Format]
pp_open_vbox [Format]
pp_over_max_boxes [Format]
pp_print_as [Format]
pp_print_bool [Format]
pp_print_break [Format]
pp_print_char [Format]
pp_print_cut [Format]
pp_print_float [Format]
pp_print_flush [Format]
pp_print_if_newline [Format]
pp_print_int [Format]
pp_print_list [Format]
pp_print_list ?pp_sep pp_v ppf l prints the list l.
pp_print_newline [Format]
pp_print_space [Format]
pp_print_string [Format]
pp_print_tab [Format]
pp_print_tbreak [Format]
pp_print_text [Format]
pp_print_text ppf s prints s with spaces and newlines respectively printed with Format.pp_print_space and Format.pp_force_newline.
pp_set_all_formatter_output_functions [Format]
pp_set_ellipsis_text [Format]
pp_set_formatter_out_channel [Format]
pp_set_formatter_out_functions [Format]
pp_set_formatter_output_functions [Format]
pp_set_formatter_tag_functions [Format]
pp_set_margin [Format]
pp_set_mark_tags [Format]
pp_set_max_boxes [Format]
pp_set_max_indent [Format]
pp_set_print_tags [Format]
pp_set_tab [Format]
pp_set_tags [Format]
pred [Pervasives]
pred x is x - 1.
pred [Nativeint]
Predecessor.
pred [Int64]
Predecessor.
pred [Int32]
Predecessor.
pred_num [Num]
pred n is n-1
prerr_bytes [Pervasives]
Print a byte sequence on standard error.
prerr_char [Pervasives]
Print a character on standard error.
prerr_endline [Pervasives]
Print a string, followed by a newline character on standard error and flush standard error.
prerr_float [Pervasives]
Print a floating-point number, in decimal, on standard error.
prerr_int [Pervasives]
Print an integer, in decimal, on standard error.
prerr_newline [Pervasives]
Print a newline character on standard error, and flush standard error.
prerr_string [Pervasives]
Print a string on standard error.
prerr_warning [Location]
primitive [Ast_helper.Str]
print [Location]
print [Printexc]
Printexc.print fn x applies fn to x and returns the result.
print_as [Format]
print_as len str prints str in the current box.
print_backtrace [Printexc]
Printexc.print_backtrace oc prints an exception backtrace on the output channel oc.
print_bool [Format]
Prints a boolean in the current box.
print_break [Format]
Inserts a break hint in a pretty-printing box.
print_bytes [Pervasives]
Print a byte sequence on standard output.
print_char [Pervasives]
Print a character on standard output.
print_char [Format]
Prints a character in the current box.
print_cut [Format]
print_cut () is used to mark a good break position.
print_endline [Pervasives]
Print a string, followed by a newline character, on standard output and flush standard output.
print_error [Location]
print_error_cur_file [Location]
print_filename [Location]
print_float [Pervasives]
Print a floating-point number, in decimal, on standard output.
print_float [Format]
Prints a floating point number in the current box.
print_flush [Format]
Flushes the pretty printer: all opened boxes are closed, and all pending text is displayed.
print_if_newline [Format]
Executes the next formatting command if the preceding line has just been split.
print_int [Pervasives]
Print an integer, in decimal, on standard output.
print_int [Format]
Prints an integer in the current box.
print_loc [Location]
print_newline [Pervasives]
Print a newline character on standard output, and flush standard output.
print_newline [Format]
Equivalent to print_flush followed by a new line.
print_raw_backtrace [Printexc]
Print a raw backtrace in the same format Printexc.print_backtrace uses.
print_space [Format]
print_space () is used to separate items (typically to print a space between two words).
print_stat [Gc]
Print the current values of the memory management counters (in human-readable form) into the channel argument.
print_string [Pervasives]
Print a string on standard output.
print_string [Format]
print_string str prints str in the current box.
print_tab [Format]
print_tab () is equivalent to print_tbreak 0 0.
print_tbreak [Format]
Break hint in a tabulation box.
print_warning [Location]
print_warnings [Lexer]
printf [Printf]
Same as Printf.fprintf, but output on stdout.
printf [Format]
Same as fprintf above, but output on std_formatter.
public_method_label [CamlinternalOO]
push [Stack]
push x s adds the element x at the top of stack s.
push [Queue]
push is a synonym for add.
putenv [Unix]
Unix.putenv name value sets the value associated to a variable in the process environment.

Q
quick_stat [Gc]
Same as stat except that live_words, live_blocks, free_words, free_blocks, largest_free, and fragments are set to 0.
quo_num [Num]
Euclidean division: quotient.
quote [Str]
Str.quote s returns a regexp string that matches exactly s and nothing else.
quote [Filename]
Return a quoted version of a file name, suitable for use as one argument in a command line, escaping all meta-characters.

R
raise [Pervasives]
Raise the given exception value
raise_errorf [Location]
raise_notrace [Pervasives]
A faster version raise which does not record the backtrace.
randomize [MoreLabels.Hashtbl]
randomize [Hashtbl]
After a call to Hashtbl.randomize(), hash tables are created in randomized mode by default: Hashtbl.create returns randomized hash tables, unless the ~random:false optional parameter is given.
ratio_of_num [Num]
raw_backtrace_length [Printexc]
raw_backtrace_length bckt returns the number of slots in the backtrace bckt.
raw_backtrace_to_string [Printexc]
Return a string from a raw backtrace, in the same format Printexc.get_backtrace uses.
rcontains_from [String]
String.rcontains_from s stop c tests if character c appears in s before position stop+1.
rcontains_from [StringLabels]
String.rcontains_from s stop c tests if character c appears in s before position stop+1.
rcontains_from [BytesLabels]
rcontains_from s stop c tests if byte c appears in s before position stop+1.
rcontains_from [Bytes]
rcontains_from s stop c tests if byte c appears in s before position stop+1.
read [Unix]
read fd buff ofs len reads len bytes from descriptor fd, storing them in byte sequence buff, starting at position ofs in buff.
read_float [Pervasives]
Flush standard output, then read one line from standard input and convert it to a floating-point number.
read_int [Pervasives]
Flush standard output, then read one line from standard input and convert it to an integer.
read_line [Pervasives]
Flush standard output, then read characters from standard input until a newline character is encountered.
readdir [Unix]
Return the next entry in a directory.
readdir [Sys]
Return the names of all files present in the given directory.
readlink [Unix]
Read the contents of a link.
really_input [Pervasives]
really_input ic buf pos len reads len characters from channel ic, storing them in byte sequence buf, starting at character number pos.
really_input_string [Pervasives]
really_input_string ic len reads len characters from channel ic and returns them in a new string.
rebind [Ast_helper.Te]
rec_module [Ast_helper.Str]
rec_module [Ast_helper.Sig]
recast [CamlinternalFormat]
record [Ast_helper.Exp]
record [Ast_helper.Pat]
record_backtrace [Printexc]
Printexc.record_backtrace b turns recording of exception backtraces on (if b = true) or off (if b = false).
recv [Unix]
Receive data from a connected socket.
recvfrom [Unix]
Receive data from an unconnected socket.
ref [Pervasives]
Return a fresh reference containing the given value.
regexp [Str]
Compile a regular expression.
regexp_case_fold [Str]
Same as regexp, but the compiled expression will match text in a case-insensitive way: uppercase and lowercase letters will be considered equivalent.
regexp_string [Str]
Str.regexp_string s returns a regular expression that matches exactly s and nothing else.
regexp_string_case_fold [Str]
Str.regexp_string_case_fold is similar to Str.regexp_string, but the regexp matches in a case-insensitive way.
register [Ast_mapper]
Apply the register_function.
register [Callback]
Callback.register n v registers the value v under the name n.
register_error_of_exn [Location]
register_exception [Callback]
Callback.register_exception n exn registers the exception contained in the exception value exn under the name n.
register_function [Ast_mapper]
register_printer [Printexc]
Printexc.register_printer fn registers fn as an exception printer.
rem [Nativeint]
Integer remainder.
rem [Int64]
Integer remainder.
rem [Int32]
Integer remainder.
remove [Weak.S]
remove t x removes from t one instance of x.
remove [Sys]
Remove the given file name from the file system.
remove [Set.S]
remove x s returns a set containing all elements of s, except x.
remove [MoreLabels.Set.S]
remove [MoreLabels.Map.S]
remove [MoreLabels.Hashtbl.SeededS]
remove [MoreLabels.Hashtbl.S]
remove [MoreLabels.Hashtbl]
remove [Map.S]
remove x m returns a map containing the same bindings as m, except for x which is unbound in the returned map.
remove [Hashtbl.SeededS]
remove [Hashtbl.S]
remove [Hashtbl]
Hashtbl.remove tbl x removes the current binding of x in tbl, restoring the previous binding if it exists.
remove_assoc [ListLabels]
remove_assoc a l returns the list of pairs l without the first pair with key a, if any.
remove_assoc [List]
remove_assoc a l returns the list of pairs l without the first pair with key a, if any.
remove_assq [ListLabels]
Same as ListLabels.remove_assoc, but uses physical equality instead of structural equality to compare keys.
remove_assq [List]
Same as List.remove_assoc, but uses physical equality instead of structural equality to compare keys.
rename [Unix]
rename old new changes the name of a file from old to new.
rename [Sys]
Rename a file.
replace [MoreLabels.Hashtbl.SeededS]
replace [MoreLabels.Hashtbl.S]
replace [MoreLabels.Hashtbl]
replace [Hashtbl.SeededS]
replace [Hashtbl.S]
replace [Hashtbl]
Hashtbl.replace tbl x y replaces the current binding of x in tbl by a binding of x to y.
replace_first [Str]
Same as Str.global_replace, except that only the first substring matching the regular expression is replaced.
replace_matched [Str]
replace_matched repl s returns the replacement text repl in which \1, \2, etc.
report_error [Syntaxerr]
report_error [Location]
report_error [Lexer]
report_exception [Location]
repr [Obj]
reset [Location]
reset [MoreLabels.Hashtbl.SeededS]
reset [MoreLabels.Hashtbl.S]
reset [MoreLabels.Hashtbl]
reset [Hashtbl.SeededS]
reset [Hashtbl.S]
reset [Hashtbl]
Empty a hash table and shrink the size of the bucket table to its initial size.
reset [Buffer]
Empty the buffer and deallocate the internal byte sequence holding the buffer contents, replacing it with the initial internal byte sequence of length n that was allocated by Buffer.create n.
reshape [Bigarray]
reshape b [|d1;...;dN|] converts the big array b to a N-dimensional array of dimensions d1...
reshape_1 [Bigarray]
Specialized version of Bigarray.reshape for reshaping to one-dimensional arrays.
reshape_2 [Bigarray]
Specialized version of Bigarray.reshape for reshaping to two-dimensional arrays.
reshape_3 [Bigarray]
Specialized version of Bigarray.reshape for reshaping to three-dimensional arrays.
rev [ListLabels]
List reversal.
rev [List]
List reversal.
rev_append [ListLabels]
ListLabels.rev_append l1 l2 reverses l1 and concatenates it to l2.
rev_append [List]
List.rev_append l1 l2 reverses l1 and concatenates it to l2.
rev_char_set [CamlinternalFormat]
rev_map [ListLabels]
ListLabels.rev_map f l gives the same result as ListLabels.rev (ListLabels.map f l), but is tail-recursive and more efficient.
rev_map [List]
List.rev_map f l gives the same result as List.rev (List.map f l), but is tail-recursive and more efficient.
rev_map2 [ListLabels]
ListLabels.rev_map2 f l1 l2 gives the same result as ListLabels.rev (ListLabels.map2 f l1 l2), but is tail-recursive and more efficient.
rev_map2 [List]
List.rev_map2 f l1 l2 gives the same result as List.rev (List.map2 f l1 l2), but is tail-recursive and more efficient.
rewinddir [Unix]
Reposition the descriptor to the beginning of the directory
rhs_docs [Docstrings]
Fetch the item documentation for the symbols between two positions.
rhs_docs_lazy [Docstrings]
rhs_end [Parsing]
rhs_end_pos [Parsing]
Same as rhs_end, but return a position instead of an offset.
rhs_info [Docstrings]
Fetch the field info following the symbol at a given position.
rhs_loc [Location]
rhs_loc n returns the location of the symbol at position n, starting at 1, in the current parser rule.
rhs_post_extra_text [Docstrings]
Fetch additional text following the symbol at the given position
rhs_pre_extra_text [Docstrings]
Fetch additional text preceding the symbol at the given position
rhs_start [Parsing]
Same as Parsing.symbol_start and Parsing.symbol_end, but return the offset of the string matching the nth item on the right-hand side of the rule, where n is the integer parameter to rhs_start and rhs_end.
rhs_start_pos [Parsing]
Same as rhs_start, but return a position instead of an offset.
rhs_text [Docstrings]
Fetch the text preceding the symbol at the given position.
rhs_text_lazy [Docstrings]
rindex [String]
String.rindex s c returns the index of the last occurrence of character c in string s.
rindex [StringLabels]
String.rindex s c returns the index of the last occurrence of character c in string s.
rindex [BytesLabels]
rindex s c returns the index of the last occurrence of byte c in s.
rindex [Bytes]
rindex s c returns the index of the last occurrence of byte c in s.
rindex_from [String]
String.rindex_from s i c returns the index of the last occurrence of character c in string s before position i+1.
rindex_from [StringLabels]
String.rindex_from s i c returns the index of the last occurrence of character c in string s before position i+1.
rindex_from [BytesLabels]
rindex_from s i c returns the index of the last occurrence of byte c in s before position i+1.
rindex_from [Bytes]
rindex_from s i c returns the index of the last occurrence of byte c in s before position i+1.
rmdir [Unix]
Remove an empty directory.
round_num [Num]
round_num n returns the integer closest to n.
run_initializers [CamlinternalOO]
run_initializers_opt [CamlinternalOO]
run_main [Ast_mapper]
Entry point to call to implement a standalone -ppx rewriter from a mapper, parametrized by the command line arguments.

S
scanf [Scanf]
Same as Scanf.bscanf, but reads from the predefined formatted input channel Scanf.Scanning.stdin that is connected to Pervasives.stdin.
search_backward [Str]
search_backward r s last searches the string s for a substring matching the regular expression r.
search_forward [Str]
search_forward r s start searches the string s for a substring matching the regular expression r.
seeded_hash [MoreLabels.Hashtbl]
seeded_hash [Hashtbl]
A variant of Hashtbl.hash that is further parameterized by an integer seed.
seeded_hash_param [MoreLabels.Hashtbl]
seeded_hash_param [Hashtbl]
A variant of Hashtbl.hash_param that is further parameterized by an integer seed.
seek_in [Pervasives.LargeFile]
seek_in [Pervasives]
seek_in chan pos sets the current reading position to pos for channel chan.
seek_out [Pervasives.LargeFile]
seek_out [Pervasives]
seek_out chan pos sets the current writing position to pos for channel chan.
select [Unix]
Wait until some input/output operations become possible on some channels.
self_init [Random]
Initialize the generator with a random seed chosen in a system-dependent way.
send [Unix]
Send data over a connected socket.
send [Ast_helper.Exp]
send [CamlinternalOO]
send_substring [Unix]
Same as send, but take the data from a string instead of a byte sequence.
sendcache [CamlinternalOO]
sendself [CamlinternalOO]
sendto [Unix]
Send data over an unconnected socket.
sendto_substring [Unix]
Same as sendto, but take the data from a string instead of a byte sequence.
sequence [Ast_helper.Exp]
set [Bigarray.Array3]
Array3.set a x y v, or alternatively a.{x,y,z} <- v, stores the value v at coordinates (x, y, z) in a.
set [Bigarray.Array2]
Array2.set a x y v, or alternatively a.{x,y} <- v, stores the value v at coordinates (x, y) in a.
set [Bigarray.Array1]
Array1.set a x v, also written a.{x} <- v, stores the value v at index x in a.
set [Bigarray.Genarray]
Assign an element of a generic big array.
set [Weak]
Weak.set ar n (Some el) sets the nth cell of ar to be a (full) pointer to el; Weak.set ar n None sets the nth cell of ar to empty.
set [String]
String.set s n c modifies byte sequence s in place, replacing the byte at index n with c.
set [StringLabels]
String.set s n c modifies byte sequence s in place, replacing the byte at index n with c.
set [Gc]
set r changes the GC parameters according to the control record r.
set [BytesLabels]
set s n c modifies s in place, replacing the byte at index n with c.
set [Bytes]
set s n c modifies s in place, replacing the byte at index n with c.
set [ArrayLabels]
ArrayLabels.set a n x modifies array a in place, replacing element number n with x.
set [Array]
Array.set a n x modifies array a in place, replacing element number n with x.
set_all_formatter_output_functions [Format]
set_binary_mode_in [Pervasives]
set_binary_mode_in ic true sets the channel ic to binary mode: no translations take place during input.
set_binary_mode_out [Pervasives]
set_binary_mode_out oc true sets the channel oc to binary mode: no translations take place during output.
set_close_on_exec [Unix]
Set the ``close-on-exec'' flag on the given descriptor.
set_cookie [Ast_mapper]
set_double_field [Obj]
set_ellipsis_text [Format]
Set the text of the ellipsis printed when too many boxes are opened (a single dot, ., by default).
set_field [Obj]
set_floating_docstrings [Docstrings]
Docstrings not immediately adjacent to a token
set_formatter_out_channel [Format]
Redirect the pretty-printer output to the given channel.
set_formatter_out_functions [Format]
set_formatter_out_functions f Redirect the pretty-printer output to the functions f.out_string and f.out_flush as described in set_formatter_output_functions.
set_formatter_output_functions [Format]
set_formatter_output_functions out flush redirects the pretty-printer output functions to the functions out and flush.
set_formatter_tag_functions [Format]
set_formatter_tag_functions tag_funs changes the meaning of opening and closing tags to use the functions in tag_funs.
set_margin [Format]
set_margin d sets the value of the right margin to d (in characters): this value is used to detect line overflows that leads to split lines.
set_mark_tags [Format]
set_mark_tags b turns on or off the output of tag markers.
set_max_boxes [Format]
set_max_boxes max sets the maximum number of boxes simultaneously opened.
set_max_indent [Format]
set_max_indent d sets the value of the maximum indentation limit to d (in characters): once this limit is reached, boxes are rejected to the left, if they do not fit on the current line.
set_method [CamlinternalOO]
set_methods [CamlinternalOO]
set_nonblock [Unix]
Set the ``non-blocking'' flag on the given descriptor.
set_post_docstrings [Docstrings]
Docstrings immediately following a token
set_post_extra_docstrings [Docstrings]
Docstrings immediately preceding the token which follows this one
set_pre_docstrings [Docstrings]
Docstrings immediately preceding a token
set_pre_extra_docstrings [Docstrings]
Docstrings immediately following the token which precedes this one
set_preprocessor [Lexer]
set_print_tags [Format]
set_print_tags b turns on or off the printing of tags.
set_signal [Sys]
Same as Sys.signal but return value is ignored.
set_state [Random]
Set the state of the generator used by the basic functions.
set_tab [Format]
Sets a tabulation mark at the current insertion point.
set_tag [Obj]
set_tags [Format]
set_tags b turns on or off the treatment of tags (default is off).
set_temp_dir_name [Filename]
Change the temporary directory returned by Filename.get_temp_dir_name and used by Filename.temp_file and Filename.open_temp_file.
set_trace [Parsing]
Control debugging support for ocamlyacc-generated parsers.
set_uncaught_exception_handler [Printexc]
Printexc.set_uncaught_exception_handler fn registers fn as the handler for uncaught exceptions.
setfield [Ast_helper.Exp]
setgid [Unix]
Set the real group id and effective group id for the process.
setgroups [Unix]
setgroups groups sets the supplementary group IDs for the calling process.
setinstvar [Ast_helper.Exp]
setitimer [Unix]
setitimer t s sets the interval timer t and returns its previous status.
setsid [Unix]
Put the calling process in a new session and detach it from its controlling terminal.
setsockopt [Unix]
Set or clear a boolean-valued option in the given socket.
setsockopt_float [Unix]
Same as Unix.setsockopt for a socket option whose value is a floating-point number.
setsockopt_int [Unix]
Same as Unix.setsockopt for an integer-valued socket option.
setsockopt_optint [Unix]
Same as Unix.setsockopt for a socket option whose value is an int option.
setuid [Unix]
Set the real user id and effective user id for the process.
shift_left [Nativeint]
Nativeint.shift_left x y shifts x to the left by y bits.
shift_left [Int64]
Int64.shift_left x y shifts x to the left by y bits.
shift_left [Int32]
Int32.shift_left x y shifts x to the left by y bits.
shift_right [Nativeint]
Nativeint.shift_right x y shifts x to the right by y bits.
shift_right [Int64]
Int64.shift_right x y shifts x to the right by y bits.
shift_right [Int32]
Int32.shift_right x y shifts x to the right by y bits.
shift_right_logical [Nativeint]
Nativeint.shift_right_logical x y shifts x to the right by y bits.
shift_right_logical [Int64]
Int64.shift_right_logical x y shifts x to the right by y bits.
shift_right_logical [Int32]
Int32.shift_right_logical x y shifts x to the right by y bits.
show_filename [Location]
In -absname mode, return the absolute path for this filename.
shutdown [Unix]
Shutdown a socket connection.
shutdown_connection [Unix]
``Shut down'' a connection established with Unix.open_connection; that is, transmit an end-of-file condition to the server reading on the other side of the connection.
sigabrt [Sys]
Abnormal termination
sigalrm [Sys]
Timeout
sigchld [Sys]
Child process terminated
sigcont [Sys]
Continue
sigfpe [Sys]
Arithmetic exception
sighup [Sys]
Hangup on controlling terminal
sigill [Sys]
Invalid hardware instruction
sigint [Sys]
Interactive interrupt (ctrl-C)
sigkill [Sys]
Termination (cannot be ignored)
sign_num [Num]
Return -1, 0 or 1 according to the sign of the argument.
signal [Sys]
Set the behavior of the system on receipt of a given signal.
signature [Pprintast]
signature [Ast_helper.Cty]
signature [Ast_helper.Mty]
sigpending [Unix]
Return the set of blocked signals that are currently pending.
sigpipe [Sys]
Broken pipe
sigprocmask [Unix]
sigprocmask cmd sigs changes the set of blocked signals.
sigprof [Sys]
Profiling interrupt
sigquit [Sys]
Interactive termination
sigsegv [Sys]
Invalid memory reference
sigstop [Sys]
Stop
sigsuspend [Unix]
sigsuspend sigs atomically sets the blocked signals to sigs and waits for a non-ignored, non-blocked signal to be delivered.
sigterm [Sys]
Termination
sigtstp [Sys]
Interactive stop
sigttin [Sys]
Terminal read from background process
sigttou [Sys]
Terminal write from background process
sigusr1 [Sys]
Application-defined signal 1
sigusr2 [Sys]
Application-defined signal 2
sigvtalrm [Sys]
Timeout in virtual time
sin [Pervasives]
Sine.
single_write [Unix]
Same as write, but attempts to write only once.
single_write_substring [Unix]
Same as single_write, but take the data from a string instead of a byte sequence.
singleton [Set.S]
singleton x returns the one-element set containing only x.
singleton [MoreLabels.Set.S]
singleton [MoreLabels.Map.S]
singleton [Map.S]
singleton x y returns the one-element map that contains a binding y for x.
sinh [Pervasives]
Hyperbolic sine.
size [Obj]
size [Nativeint]
The size in bits of a native integer.
skip_sharp_bang [Lexer]
sleep [Unix]
Stop execution for the given number of seconds.
slice_left [Bigarray.Array2]
Extract a row (one-dimensional slice) of the given two-dimensional big array.
slice_left [Bigarray.Genarray]
Extract a sub-array of lower dimension from the given big array by fixing one or several of the first (left-most) coordinates.
slice_left_1 [Bigarray.Array3]
Extract a one-dimensional slice of the given three-dimensional big array by fixing the first two coordinates.
slice_left_2 [Bigarray.Array3]
Extract a two-dimensional slice of the given three-dimensional big array by fixing the first coordinate.
slice_right [Bigarray.Array2]
Extract a column (one-dimensional slice) of the given two-dimensional big array.
slice_right [Bigarray.Genarray]
Extract a sub-array of lower dimension from the given big array by fixing one or several of the last (right-most) coordinates.
slice_right_1 [Bigarray.Array3]
Extract a one-dimensional slice of the given three-dimensional big array by fixing the last two coordinates.
slice_right_2 [Bigarray.Array3]
Extract a two-dimensional slice of the given three-dimensional big array by fixing the last coordinate.
snd [Pervasives]
Return the second component of a pair.
socket [Unix]
Create a new socket in the given domain, and with the given kind.
socketpair [Unix]
Create a pair of unnamed sockets, connected together.
sort [ListLabels]
Sort a list in increasing order according to a comparison function.
sort [List]
Sort a list in increasing order according to a comparison function.
sort [ArrayLabels]
Sort an array in increasing order according to a comparison function.
sort [Array]
Sort an array in increasing order according to a comparison function.
sort_uniq [List]
Same as List.sort, but also remove duplicates.
split [Str]
split r s splits s into substrings, taking as delimiters the substrings that match r, and returns the list of substrings.
split [Set.S]
split x s returns a triple (l, present, r), where l is the set of elements of s that are strictly less than x; r is the set of elements of s that are strictly greater than x; present is false if s contains no element equal to x, or true if s contains an element equal to x.
split [MoreLabels.Set.S]
split [MoreLabels.Map.S]
split [Map.S]
split x m returns a triple (l, data, r), where l is the map with all the bindings of m whose key is strictly less than x; r is the map with all the bindings of m whose key is strictly greater than x; data is None if m contains no binding for x, or Some v if m binds v to x.
split [ListLabels]
Transform a list of pairs into a pair of lists: split [(a1,b1); ...; (an,bn)] is ([a1; ...; an], [b1; ...; bn]).
split [List]
Transform a list of pairs into a pair of lists: split [(a1,b1); ...; (an,bn)] is ([a1; ...; an], [b1; ...; bn]).
split_delim [Str]
Same as Str.split but occurrences of the delimiter at the beginning and at the end of the string are recognized and returned as empty strings in the result.
sprintf [Printf]
Same as Printf.fprintf, but instead of printing on an output channel, return a string containing the result of formatting the arguments.
sprintf [Format]
Same as printf above, but instead of printing on a formatter, returns a string containing the result of formatting the arguments.
sqrt [Pervasives]
Square root.
sqrt [Complex]
Square root.
square_num [Num]
Squaring
sscanf [Scanf]
Same as Scanf.bscanf, but reads from the given string.
sscanf_format [Scanf]
Same as Scanf.bscanf_format, but reads from the given string.
stable_sort [ListLabels]
Same as ListLabels.sort, but the sorting algorithm is guaranteed to be stable (i.e.
stable_sort [List]
Same as List.sort, but the sorting algorithm is guaranteed to be stable (i.e.
stable_sort [ArrayLabels]
Same as ArrayLabels.sort, but the sorting algorithm is stable (i.e.
stable_sort [Array]
Same as Array.sort, but the sorting algorithm is stable (i.e.
stat [Unix.LargeFile]
stat [Unix]
Return the information for the named file.
stat [Gc]
Return the current values of the memory management counters in a stat record.
stats [Weak.S]
Return statistics on the table.
stats [MoreLabels.Hashtbl.SeededS]
stats [MoreLabels.Hashtbl.S]
stats [MoreLabels.Hashtbl]
stats [Hashtbl.SeededS]
stats [Hashtbl.S]
stats [Hashtbl]
Hashtbl.stats tbl returns statistics about the table tbl: number of buckets, size of the biggest bucket, distribution of buckets by size.
stats [CamlinternalOO]
std_formatter [Format]
The standard formatter used by the formatting functions above.
stdbuf [Format]
The string buffer in which str_formatter writes.
stderr [Unix]
File descriptor for standard error.
stderr [Pervasives]
The standard error output for the process.
stdib [Scanf.Scanning]
A deprecated alias for Scanning.stdin, the scanning buffer reading from Pervasives.stdin.
stdin [Unix]
File descriptor for standard input.
stdin [Scanf.Scanning]
The standard input notion for the Scanf module.
stdin [Pervasives]
The standard input for the process.
stdout [Unix]
File descriptor for standard output.
stdout [Pervasives]
The standard output for the process.
str_formatter [Format]
A formatter to use with formatting functions below for output to the stdbuf string buffer.
string [Digest]
Return the digest of the given string.
string_after [Str]
string_after s n returns the substring of all characters of s that follow position n (including the character at position n).
string_before [Str]
string_before s n returns the substring of all characters of s that precede position n (excluding the character at position n).
string_match [Str]
string_match r s start tests whether a substring of s that starts at position start matches the regular expression r.
string_of_bool [Pervasives]
Return the string representation of a boolean.
string_of_expression [Pprintast]
string_of_float [Pervasives]
Return the string representation of a floating-point number.
string_of_fmt [CamlinternalFormat]
string_of_fmtty [CamlinternalFormat]
string_of_format [Pervasives]
Converts a format string into a string.
string_of_formatting_gen [CamlinternalFormat]
string_of_formatting_lit [CamlinternalFormat]
string_of_inet_addr [Unix]
Return the printable representation of the given Internet address.
string_of_int [Pervasives]
Return the string representation of an integer, in decimal.
string_of_num [Num]
Convert a number to a string, using fractional notation.
string_of_structure [Pprintast]
string_partial_match [Str]
Similar to Str.string_match, but also returns true if the argument string is a prefix of a string that matches.
string_tag [Obj]
strput_acc [CamlinternalFormat]
structure [Printast]
structure [Pprintast]
structure [Ast_helper.Cl]
structure [Ast_helper.Mod]
sub [Bigarray.Array1]
Extract a sub-array of the given one-dimensional big array.
sub [String]
String.sub s start len returns a fresh string of length len, containing the substring of s that starts at position start and has length len.
sub [StringLabels]
String.sub s start len returns a fresh string of length len, containing the substring of s that starts at position start and has length len.
sub [Nativeint]
Subtraction.
sub [Int64]
Subtraction.
sub [Int32]
Subtraction.
sub [Complex]
Subtraction
sub [BytesLabels]
sub s start len returns a new byte sequence of length len, containing the subsequence of s that starts at position start and has length len.
sub [Bytes]
sub s start len returns a new byte sequence of length len, containing the subsequence of s that starts at position start and has length len.
sub [Buffer]
Buffer.sub b off len returns (a copy of) the bytes from the current contents of the buffer b starting at offset off of length len bytes.
sub [ArrayLabels]
ArrayLabels.sub a start len returns a fresh array of length len, containing the elements number start to start + len - 1 of array a.
sub [Array]
Array.sub a start len returns a fresh array of length len, containing the elements number start to start + len - 1 of array a.
sub_left [Bigarray.Array3]
Extract a three-dimensional sub-array of the given three-dimensional big array by restricting the first dimension.
sub_left [Bigarray.Array2]
Extract a two-dimensional sub-array of the given two-dimensional big array by restricting the first dimension.
sub_left [Bigarray.Genarray]
Extract a sub-array of the given big array by restricting the first (left-most) dimension.
sub_num [Num]
Subtraction
sub_right [Bigarray.Array3]
Extract a three-dimensional sub-array of the given three-dimensional big array by restricting the second dimension.
sub_right [Bigarray.Array2]
Extract a two-dimensional sub-array of the given two-dimensional big array by restricting the second dimension.
sub_right [Bigarray.Genarray]
Extract a sub-array of the given big array by restricting the last (right-most) dimension.
sub_string [BytesLabels]
Same as sub but return a string instead of a byte sequence.
sub_string [Bytes]
Same as sub but return a string instead of a byte sequence.
subbytes [Digest]
Digest.subbytes s ofs len returns the digest of the subsequence of s starting at index ofs and containing len bytes.
subset [Set.S]
subset s1 s2 tests whether the set s1 is a subset of the set s2.
subset [MoreLabels.Set.S]
substitute_first [Str]
Same as Str.global_substitute, except that only the first substring matching the regular expression is replaced.
substring [Digest]
Digest.substring s ofs len returns the digest of the substring of s starting at index ofs and containing len characters.
succ [Pervasives]
succ x is x + 1.
succ [Nativeint]
Successor.
succ [Int64]
Successor.
succ [Int32]
Successor.
succ_num [Num]
succ n is n+1
symbol_docs [Docstrings]
Fetch the item documentation for the current symbol.
symbol_docs_lazy [Docstrings]
symbol_end [Parsing]
symbol_end_pos [Parsing]
Same as symbol_end, but return a position instead of an offset.
symbol_gloc [Location]
symbol_info [Docstrings]
Fetch the field info for the current symbol.
symbol_post_extra_text [Docstrings]
Fetch additional text following the current symbol
symbol_pre_extra_text [Docstrings]
Fetch additional text preceding the current symbol
symbol_rloc [Location]
symbol_start [Parsing]
symbol_start and Parsing.symbol_end are to be called in the action part of a grammar rule only.
symbol_start_pos [Parsing]
Same as symbol_start, but return a position instead of an offset.
symbol_text [Docstrings]
Fetch the text preceding the current symbol.
symbol_text_lazy [Docstrings]
symlink [Unix]
symlink source dest creates the file dest as a symbolic link to the file source.
symm [CamlinternalFormat]
system [Unix]
Execute the given command, wait until it terminates, and return its termination status.

T
tag [Obj]
take [Queue]
take q removes and returns the first element in queue q, or raises Empty if the queue is empty.
tan [Pervasives]
Tangent.
tanh [Pervasives]
Hyperbolic tangent.
tcdrain [Unix]
Waits until all output written on the given file descriptor has been transmitted.
tcflow [Unix]
Suspend or restart reception or transmission of data on the given file descriptor, depending on the second argument: TCOOFF suspends output, TCOON restarts output, TCIOFF transmits a STOP character to suspend input, and TCION transmits a START character to restart input.
tcflush [Unix]
Discard data written on the given file descriptor but not yet transmitted, or data received but not yet read, depending on the second argument: TCIFLUSH flushes data received but not read, TCOFLUSH flushes data written but not transmitted, and TCIOFLUSH flushes both.
tcgetattr [Unix]
Return the status of the terminal referred to by the given file descriptor.
tcsendbreak [Unix]
Send a break condition on the given file descriptor.
tcsetattr [Unix]
Set the status of the terminal referred to by the given file descriptor.
temp_dir_name [Filename]
The name of the initial temporary directory: Under Unix, the value of the TMPDIR environment variable, or "/tmp" if the variable is not set.
temp_file [Filename]
temp_file prefix suffix returns the name of a fresh temporary file in the temporary directory.
text [Ast_helper.Cf]
text [Ast_helper.Ctf]
text [Ast_helper.Str]
text [Ast_helper.Sig]
text_attr [Docstrings]
time [Unix]
Return the current time since 00:00:00 GMT, Jan.
time [Sys]
Return the processor time, in seconds, used by the program since the beginning of execution.
times [Unix]
Return the execution times of the process.
tl [ListLabels]
Return the given list without its first element.
tl [List]
Return the given list without its first element.
to_buffer [Marshal]
Marshal.to_buffer buff ofs len v flags marshals the value v, storing its byte representation in the sequence buff, starting at index ofs, and writing at most len bytes.
to_bytes [Marshal]
Marshal.to_bytes v flags returns a byte sequence containing the representation of v.
to_bytes [Buffer]
Return a copy of the current contents of the buffer.
to_channel [Marshal]
Marshal.to_channel chan v flags writes the representation of v on channel chan.
to_float [Nativeint]
Convert the given native integer to a floating-point number.
to_float [Int64]
Convert the given 64-bit integer to a floating-point number.
to_float [Int32]
Convert the given 32-bit integer to a floating-point number.
to_hex [Digest]
Return the printable hexadecimal representation of the given digest.
to_int [Nativeint]
Convert the given native integer (type nativeint) to an integer (type int).
to_int [Int64]
Convert the given 64-bit integer (type int64) to an integer (type int).
to_int [Int32]
Convert the given 32-bit integer (type int32) to an integer (type int).
to_int32 [Nativeint]
Convert the given native integer to a 32-bit integer (type int32).
to_int32 [Int64]
Convert the given 64-bit integer (type int64) to a 32-bit integer (type int32).
to_list [ArrayLabels]
ArrayLabels.to_list a returns the list of all the elements of a.
to_list [Array]
Array.to_list a returns the list of all the elements of a.
to_nativeint [Int64]
Convert the given 64-bit integer (type int64) to a native integer.
to_string [Printexc]
Printexc.to_string e returns a string representation of the exception e.
to_string [Nativeint]
Return the string representation of its argument, in decimal.
to_string [Marshal]
Same as to_bytes but return the result as a string instead of a byte sequence.
to_string [Int64]
Return the string representation of its argument, in decimal.
to_string [Int32]
Return the string representation of its argument, in signed decimal.
to_string [BytesLabels]
Return a new string that contains the same bytes as the given byte sequence.
to_string [Bytes]
Return a new string that contains the same bytes as the given byte sequence.
token [Lexer]
token_with_comments [Lexer]
tool_name [Ast_mapper]
Can be used within a ppx preprocessor to know which tool is calling it "ocamlc", "ocamlopt", "ocamldoc", "ocamldep", "ocaml", ...
top [Stack]
top s returns the topmost element in stack s, or raises Empty if the stack is empty.
top [Queue]
top is a synonym for peek.
top_phrase [Printast]
top_phrase [Pprintast]
toplevel_phrase [Pprintast]
toplevel_phrase [Parser]
toplevel_phrase [Parse]
total_size [Marshal]
trans [CamlinternalFormat]
transfer [Queue]
transfer q1 q2 adds all of q1's elements at the end of the queue q2, then clears q1.
trim [String]
Return a copy of the argument, without leading and trailing whitespace.
trim [StringLabels]
Return a copy of the argument, without leading and trailing whitespace.
trim [BytesLabels]
Return a copy of the argument, without leading and trailing whitespace.
trim [Bytes]
Return a copy of the argument, without leading and trailing whitespace.
truncate [Unix.LargeFile]
truncate [Unix]
Truncates the named file to the given size.
truncate [Pervasives]
truncate [Obj]
try_ [Ast_helper.Exp]
tuple [Ast_helper.Exp]
tuple [Ast_helper.Pat]
tuple [Ast_helper.Typ]
type_ [Ast_helper.Str]
type_ [Ast_helper.Sig]
type_ [Ast_helper.Pat]
type_extension [Ast_helper.Str]
type_extension [Ast_helper.Sig]
type_format [CamlinternalFormat]
typeof_ [Ast_helper.Mty]

U
umask [Unix]
Set the process's file mode creation mask, and return the previous mask.
unaligned_tag [Obj]
uncapitalize [String]
Return a copy of the argument, with the first character set to lowercase.
uncapitalize [StringLabels]
Return a copy of the argument, with the first character set to lowercase.
uncapitalize [BytesLabels]
Return a copy of the argument, with the first byte set to lowercase.
uncapitalize [Bytes]
Return a copy of the argument, with the first byte set to lowercase.
unescaped [Scanf]
Return a copy of the argument with escape sequences, following the lexical conventions of OCaml, replaced by their corresponding special characters.
union [Set.S]
Set union.
union [MoreLabels.Set.S]
unix [Sys]
True if Sys.os_type = "Unix".
unlink [Unix]
Removes the named file
unmarshal [Obj]
unpack [Ast_helper.Mod]
unpack [Ast_helper.Pat]
unsafe_get [Bigarray.Array3]
Like Bigarray.Array3.get, but bounds checking is not always performed.
unsafe_get [Bigarray.Array2]
Like Bigarray.Array2.get, but bounds checking is not always performed.
unsafe_get [Bigarray.Array1]
Like Bigarray.Array1.get, but bounds checking is not always performed.
unsafe_get [ArrayLabels]
unsafe_get [Array]
unsafe_of_string [Bytes]
Unsafely convert a shared string to a byte sequence that should not be mutated.
unsafe_set [Bigarray.Array3]
Like Bigarray.Array3.set, but bounds checking is not always performed.
unsafe_set [Bigarray.Array2]
Like Bigarray.Array2.set, but bounds checking is not always performed.
unsafe_set [Bigarray.Array1]
Like Bigarray.Array1.set, but bounds checking is not always performed.
unsafe_set [ArrayLabels]
unsafe_set [Array]
unsafe_to_string [Bytes]
Unsafely convert a byte sequence into a string.
update_mod [CamlinternalMod]
uppercase [String]
Return a copy of the argument, with all lowercase letters translated to uppercase, including accented letters of the ISO Latin-1 (8859-1) character set.
uppercase [StringLabels]
Return a copy of the argument, with all lowercase letters translated to uppercase, including accented letters of the ISO Latin-1 (8859-1) character set.
uppercase [Char]
Convert the given character to its equivalent uppercase character.
uppercase [BytesLabels]
Return a copy of the argument, with all lowercase letters translated to uppercase, including accented letters of the ISO Latin-1 (8859-1) character set.
uppercase [Bytes]
Return a copy of the argument, with all lowercase letters translated to uppercase, including accented letters of the ISO Latin-1 (8859-1) character set.
usage [Arg]
Arg.usage speclist usage_msg prints to standard error an error message that includes the list of valid options.
usage_string [Arg]
Returns the message that would have been printed by Arg.usage, if provided with the same parameters.
use_file [Parser]
use_file [Parse]
utimes [Unix]
Set the last access time (second arg) and last modification time (third arg) for a file.

V
val_ [Ast_helper.Cf]
val_ [Ast_helper.Ctf]
value [Ast_helper.Str]
value [Ast_helper.Sig]
var [Ast_helper.Pat]
var [Ast_helper.Typ]
variant [Ast_helper.Exp]
variant [Ast_helper.Pat]
variant [Ast_helper.Typ]
virtual_ [Ast_helper.Cf]

W
wait [Unix]
Wait until one of the children processes die, and return its pid and termination status.
waitpid [Unix]
Same as Unix.wait, but waits for the child process whose pid is given.
warn_bad_docstrings [Docstrings]
Emit warnings for unattached and ambiguous docstrings
warning_printer [Location]
Hook for intercepting warnings.
while_ [Ast_helper.Exp]
widen [CamlinternalOO]
win32 [Sys]
True if Sys.os_type = "Win32".
with_ [Ast_helper.Mty]
with_default_loc [Ast_helper]
Set the default_loc within the scope of the execution of the provided function.
word_size [Sys]
Size of one word on the machine currently executing the OCaml program, in bits: 32 or 64.
write [Unix]
write fd buff ofs len writes len bytes to descriptor fd, taking them from byte sequence buff, starting at position ofs in buff.
write_substring [Unix]
Same as write, but take the data from a string instead of a byte sequence.

Z
zero [Nativeint]
The native integer 0.
zero [Int64]
The 64-bit integer 0.
zero [Int32]
The 32-bit integer 0.
zero [Complex]
The complex number 0.