Index of values

Return the absolute value of its argument.

Return the absolute value of its argument.

Return the absolute value of its argument.

Return the absolute value of its argument.

abs f returns the absolute value of f.

Accept connections on the given socket.

Accept connections on the given socket.

Check that the process has the given permissions over the named file.

Check that the process has the given permissions over the named file.

Arc cosine.

In bytecode, the identity function.

Addition.

add t x adds x to t.

add x s returns a set containing all elements of s, plus x.

add x q adds the element x at the end of the queue q.

Addition.

add x y m returns a map containing the same bindings as m, plus a binding of x to y.

Addition.

Addition.

Hashtbl.add tbl x y adds a binding of x to y in table tbl.

Floating-point addition.

Addition

Same as Dynlink.add_interfaces, but instead of searching .cmi files to find the unit interfaces, uses the interface digests given for each unit.

add_buffer b1 b2 appends the current contents of buffer b2 at the end of buffer b1.

add_bytes b s appends the byte sequence s at the end of buffer b.

add_channel b ic n reads at most n characters from the input channel ic and stores them at the end of buffer b.

add_char b c appends the character c at the end of buffer b.

Convert item documentation to attributes and add them to an attribute list

Convert field info to attributes and add them to an attribute list

add_interfaces units path grants dynamically-linked object files access to the compilation units named in list units.

Same as add_ppx_context_str, but for signatures.

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 the elements from the iterator on the top of the stack.

Add the given elements to the set, in order.

Add the elements from the generator to the end of the queue

Add the given bindings to the map, in order.

Add the given bindings to the table, using Hashtbl.add

Add chars to the buffer

add_string b s appends the string s at the end of buffer b.

add_subbytes b s ofs len takes len characters from offset ofs in byte sequence s and appends them at the end of buffer b.

add_substitute b f s appends the string pattern s at the end of buffer b with substitution.

add_substring b s ofs len takes len characters from offset ofs in string s and appends them at the end of buffer b.

add_symbolic_output_item sob itm adds item itm to buffer sob.

Convert text to attributes and add them to an attribute list

add_utf_16be_uchar b u appends the UTF-16BE encoding of u at the end of buffer b.

add_utf_16le_uchar b u appends the UTF-16LE encoding of u at the end of buffer b.

add_utf_8_uchar b u appends the UTF-8 encoding of u at the end of buffer b.

Schedule a SIGALRM signal after the given number of seconds.

Schedule a SIGALRM signal after the given number of seconds.

Align the documentation strings by inserting spaces at the first alignment separator (tab or, if tab is not found, space), according to the length of the keyword.

Return the total number of bytes allocated since the program was started.

allow_only units restricts the compilation units that dynamically-linked units can reference: it forbids all references to units other than those named in the list units.

Govern whether unsafe object files are allowed to be dynamically linked.

always v returns an event that is always ready for synchronization.

Catenate two lists.

Concatenate two lists.

Array.append v1 v2 returns a fresh array containing the concatenation of the arrays v1 and v2.

Array.append v1 v2 returns a fresh array containing the concatenation of the arrays v1 and v2.

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.

If restore = true (the default), cookies set by external rewriters will be kept for later calls.

Argument.

The command line arguments given to the process.

Return the zero-dimensional big array corresponding to the given generic big array.

Return the one-dimensional big array corresponding to the given generic big array.

Return the two-dimensional big array corresponding to the given generic big array.

Return the three-dimensional big array corresponding to the given generic big array.

Arc sine.

Same as printf above, but instead of printing on a formatter, returns a string containing the result of formatting the arguments.

assoc a l returns the value associated with key a in the list of pairs l.

assoc a l returns the value associated with key a in the list of pairs l.

assoc_opt a l returns the value associated with key a in the list of pairs l.

assoc_opt a l returns the value associated with key a in the list of pairs l.

Same as List.assoc, but uses physical equality instead of structural equality to compare keys.

Same as List.assoc, but uses physical equality instead of structural equality to compare keys.

Same as List.assoc_opt, but uses physical equality instead of structural equality to compare keys.

Same as List.assoc_opt, but uses physical equality instead of structural equality to compare keys.

Arc tangent.

atan2 y x returns the arc tangent of y /. x.

Encode a warning message into an 'ocaml.ppwarning' attribute which can be inserted in a generated Parsetree.

By default, drawing takes place both on the window displayed on screen, and in a memory area (the 'backing store').

Backend type currently executing the OCaml program.

See Graphics.foreground.

Returns the slots of a raw backtrace, or None if none of them contain useful information.

Printexc.backtrace_status() returns true if exception backtraces are currently recorded, false if not.

Split a file name into directory name / base file name.

Scanning.beginning_of_input ic tests the beginning of input condition of the given Scanf.Scanning.in_channel formatted input channel.

Detects the terminal capabilities and selects an adequate printer

Whether the machine currently executing the Caml program is big-endian.

Bind a socket to an address.

Bind a socket to an address.

bind r f is Ok (f v) if r is Ok v and r if r is Error _.

bind o f is Some (f v) if o is Some v and None if o is None.

Return the list of all bindings of the given map.

Return 30 random bits in a nonnegative integer.

Return the internal representation of the given float according to the IEEE 754 floating-point 'double format' bit layout.

Return the internal representation of the given float according to the IEEE 754 floating-point 'single format' bit layout.

Weak.blit ar1 off1 ar2 off2 len copies len weak pointers from ar1 (starting at off1) to ar2 (starting at off2).

Same as Bytes.blit_string.

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 src srcoff dst dstoff len copies len bytes from sequence src, starting at index srcoff, to sequence dst, starting at index dstoff.

blit src srcoff dst dstoff len copies len bytes from sequence src, starting at index srcoff, to sequence dst, starting at index dstoff.

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.

Copy the first big array to the second big array.

Copy the first big array to the second big array.

Copy the first big array to the second big array.

Copy the first big array to the second big array.

Copy all elements of a big array in another big 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.

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.

Same as Ephemeron.K1.blit_data

Same as Ephemeron.K1.blit_data

Same as Ephemeron.K1.blit_data

Ephemeron.K1.blit_data eph1 eph2 sets the data of eph2 with the data of eph1.

blit_image img x y copies screen pixels into the image img, modifying img in-place.

Same as Ephemeron.K1.blit_key

Same as Ephemeron.K1.blit_key

Ephemeron.K1.blit_key eph1 eph2 sets the key of eph2 with the key of eph1.

Same as Ephemeron.K1.blit_key

Same as Ephemeron.K1.blit_key

Same as Ephemeron.K1.blit_key

blit src srcoff dst dstoff len copies len bytes from string src, starting at index srcoff, to byte sequence dst, starting at index dstoff.

blit src srcoff dst dstoff len copies len bytes from string src, starting at index srcoff, to byte sequence dst, starting at index dstoff.

bom is U+FEFF, the byte order mark (BOM) character.

These functions are the same as the basic functions, except that they use (and update) the given PRNG state instead of the default one.

Random.bool () returns true or false with probability 0.5 each.

Same as Str.bounded_split_delim, but returns the delimiters as well as the substrings contained between delimiters.

Same as Str.split, but splits into at most n substrings, where n is the extra integer parameter.

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.

Same as Printf.fprintf, but instead of printing on an output channel, append the formatted arguments to the given extensible buffer (see module Buffer).

broadcast c restarts all processes waiting on the condition variable c.

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.

Return true if the mouse button is pressed, false otherwise.

Return the digest of the given byte sequence.

Return a copy of the argument, with the first character set to uppercase, using the US-ASCII character set.

Return a copy of the argument, with the first character set to uppercase, using the US-ASCII character set.

Return a copy of the argument, with the first character set to uppercase, using the US-ASCII character set.

Return a copy of the argument, with the first character set to uppercase, using the US-ASCII character set.

Return the number of elements of a set.

Return the number of bindings of a map.

cat s1 s2 concatenates s1 and s2 and returns the result as new byte sequence.

cat s1 s2 concatenates s1 and s2 and returns the result as new byte sequence.

Printexc.catch fn x is similar to Printexc.print, but aborts the program with exit code 2 after printing the uncaught exception.

catch_break governs whether interactive interrupt (ctrl-C) terminates the program or raises the Break exception.

Round above to an integer value.

Array3.change_layout a layout returns a bigarray with the specified layout, sharing the data with a (and hence having the same dimensions as a).

Array2.change_layout a layout returns a bigarray with the specified layout, sharing the data with a (and hence having the same dimensions as a).

Array1.change_layout a layout returns a bigarray with the specified layout, sharing the data with a (and hence having the same dimension as a).

Array0.change_layout a layout returns a big array with the specified layout, sharing the data with a.

Genarray.change_layout a layout returns a bigarray with the specified layout, sharing the data with a (and hence having the same dimensions as a).

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.

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.

Change the process working directory.

Change the process working directory.

Change the current working directory of the process.

Weak.check ar n returns true if the nth cell of ar is full, false if it is empty.

Same as Ephemeron.K1.check_data

Same as Ephemeron.K1.check_data

Same as Ephemeron.K1.check_data

Ephemeron.K1.check_data eph returns true if the data of the eph is full, false if it is empty.

Same as Ephemeron.K1.check_key

Same as Ephemeron.K1.check_key

Ephemeron.K1.check_key eph returns true if the key of the eph is full, false if it is empty.

Same as Ephemeron.K1.check_key

Same as Ephemeron.K1.check_key

check_suffix name suff returns true if the filename name ends with the suffix suff.

Change the permissions of the named file.

Change the permissions of the named file.

choose evl returns the event that is the alternative of all the events in the list evl.

Return one element of the given set, or raise Not_found if the set is empty.

Return one binding of the given map, or raise Not_found if the map is empty.

Return one element of the given set, or None if the set is empty.

Return one binding of the given map, or None if the map is empty.

Same as Filename.remove_extension, but raise Invalid_argument if the given name has an empty extension.

chop_suffix name suff removes the suffix suff from the filename name.

Change the owner uid and owner gid of the named file.

Change the owner uid and owner gid of the named file.

Return the character with the given ASCII code.

Change the process root directory.

Change the process root directory.

Return the class of the given floating-point number: normal, subnormal, zero, infinite, or not a number.

remove all dead bindings.

remove all dead bindings.

Remove all elements from the table.

Discard all elements from a stack.

Discard all elements from a queue.

Empty a hash table.

Empty the buffer.

Empty the list of compilation units accessible to dynamically-linked programs.

Clear the ``close-on-exec'' flag on the given descriptor.

Clear the ``close-on-exec'' flag on the given descriptor.

Erase the graphics window.

Clear the ``non-blocking'' flag on the given descriptor.

Clear the ``non-blocking'' flag on the given descriptor.

Empty the parser stack.

clear_symbolic_output_buffer sob resets buffer sob.

Close a file descriptor.

Close a file descriptor.

Closes the most recently open pretty-printing box.

Delete the graphics window or switch the screen back to text mode.

Closes the in_channel associated with the given Scanf.Scanning.in_channel formatted input channel.

Close channels opened by UnixLabels.open_process, wait for the associated command to terminate, and return its termination status.

Close channels opened by Unix.open_process, wait for the associated command to terminate, and return its termination status.

Close channels opened by UnixLabels.open_process_full, wait for the associated command to terminate, and return its termination status.

Close channels opened by Unix.open_process_full, wait for the associated command to terminate, and return its termination status.

Close channels opened by UnixLabels.open_process_in, wait for the associated command to terminate, and return its termination status.

Close channels opened by Unix.open_process_in, wait for the associated command to terminate, and return its termination status.

Close channels opened by UnixLabels.open_process_out, wait for the associated command to terminate, and return its termination status.

Close channels opened by Unix.open_process_out, wait for the associated command to terminate, and return its termination status.

Close the sub-window having the given identifier.

pp_close_tag ppf () closes the most recently opened semantic tag t.

Closes the most recently opened tabulation box.

Close a directory descriptor.

Close a directory descriptor.

Return the ASCII code of the argument.

Transform a pair of lists into a list of pairs: combine [a1; ...; an] [b1; ...; bn] is [(a1,b1); ...; (an,bn)].

Transform a pair of lists into a list of pairs: combine [a1; ...; an] [b1; ...; bn] is [(a1,b1); ...; (an,bn)].

Execute the given shell command and return its exit code.

Perform a full major collection and compact the heap.

The lexicographic order supported by the provided order.

The comparison function for target integers, with the same specification as compare.

compare u u' is Stdlib.compare u u'.

The comparison function for strings, with the same specification as compare.

The comparison function for strings, with the same specification as compare.

Total ordering between sets.

compare ~ok ~error r0 r1 totally orders r0 and r1 using ok and error to respectively compare values wrapped by Ok _ and Error _.

compare cmp o0 o1 is a total order on options using cmp to compare values wrapped by Some _.

The comparison function for native integers, with the same specification as compare.

A total ordering function over the set elements.

A total ordering function over the keys.

Total ordering between maps.

The comparison function for 64-bit integers, with the same specification as compare.

The comparison function for 32-bit integers, with the same specification as compare.

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.

The comparison function for 16-character digest, with the same specification as compare and the implementation shared with String.compare.

The comparison function for characters, with the same specification as compare.

The comparison function for byte sequences, with the same specification as compare.

The comparison function for byte sequences, with the same specification as compare.

Compare the length of a list to an integer.

Compare the length of a list to an integer.

Compare the lengths of two lists.

Compare the lengths of two lists.

See Bigarray.char.

See Bigarray.char.

String.concat sep sl concatenates the list of strings sl, inserting the separator string sep between each.

String.concat sep sl concatenates the list of strings sl, inserting the separator string sep between each.

Concatenate a list of lists.

Concatenate a list of lists.

concat dir file returns a file name that designates file file in directory dir.

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 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.

Same as Array.append, but concatenates a list of arrays.

Same as Array.append, but concatenates a list of arrays.

Conjugate: given the complex x + i.y, returns x - i.y.

Connect a socket to an address.

Connect a socket to an address.

cons x xs is x :: xs

cons x xs is x :: xs

String.contains s c tests if character c appears in the string s.

String.contains s c tests if character c appears in the string s.

contains s c tests if byte c appears in s.

contains s c tests if byte c appears in s.

String.contains_from s start c tests if character c appears in s after position start.

String.contains_from s start c tests if character c appears in s after position start.

contains_from s start c tests if byte c appears in s after position start.

contains_from s start c tests if byte c appears in s after position start.

Return a copy of the current contents of the buffer.

Extracts the user-friendly backtrace_slot from a low-level raw_backtrace_slot.

Return a copy of the given string.

Return a copy of the given stack.

Return a copy of the given state.

Return a copy of the given queue.

Oo.copy o returns a copy of object o, that is a fresh object with the same methods and instance variables as o.

Return a copy of the given hashtable.

Return a new byte sequence that contains the same bytes as the argument.

Return a new byte sequence that contains the same bytes as the argument.

Array.copy a returns a copy of a, that is, a fresh array containing the same elements as a.

Array.copy a returns a copy of a, that is, a fresh array containing the same elements as a.

copysign x y returns a float whose absolute value is that of x and whose sign is that of y.

Cosine.

Hyperbolic cosine.

Count the number of elements in the table.

Return the current count of the stream elements, i.e.

Return (minor_words, promoted_words, major_words).

Return a new mutex.

Return a new condition variable.

Thread.create funct arg creates a new thread of control, in which the function application funct arg is executed concurrently with the other threads of the program.

create n creates a new empty weak hash set, of initial size n.

Weak.create n returns a new weak array of length n.

Return a new stack, initially empty.

Return a new queue, initially empty.

create n returns an ephemeron with n keys.

Hashtbl.create n creates a new, empty hash table, with initial size n.

Same as Ephemeron.K1.create

Same as Ephemeron.K1.create

Ephemeron.K1.create () creates an ephemeron with one key.

create n returns a new byte sequence of length n.

create n returns a new byte sequence of length n.

create n returns a fresh buffer, initially empty.

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.

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.

Array1.create kind layout dim returns a new bigarray of one dimension, whose size is dim.

Array0.create kind layout returns a new bigarray of zero dimension.

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 ~path creates a series file at path.

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.

Array.create_float n returns a fresh float array of length n, with uninitialized data.

Array.create_float n returns a fresh float array of length n, with uninitialized data.

create_image w h returns a new image w pixels wide and h pixels tall, to be used in conjunction with blit_image.

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 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 prog args env new_stdin new_stdout new_stderr works as UnixLabels.create_process, except that the extra argument env specifies the environment passed to the program.

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.

Get the location of the current token from the lexbuf.

Position (in Sys.argv) of the argument being processed.

The conventional name for the current directory (e.g.

Return the position of the current point.

Return the abscissa of the current point.

Return the ordinate of the current point.

curveto b c d draws a cubic Bezier curve starting from the current point to point d, with control points b and c, and moves the current point to d.

String.cut_at s c returns a pair containing the sub-string before the first occurrence of c in s, and the sub-string after the first occurrence of c in s.

True if Sys.os_type = "Cygwin".

See Marshal.header_size.

Returns the list of --debug-prefix-map flags to be passed to the assembler, built from the BUILD_PATH_PREFIX_MAP environment variable.

Reset the set of units that can be referenced from dynamically-linked code to its default value, that is, all units composing the currently running program.

A default iterator, which implements a "do not do anything" mapping.

Default value for all optional location arguments.

A default mapper, which implements a "deep identity" mapping.

Original report printer for use in hooks.

Original warning reporter for use in hooks.

delay d suspends the execution of the calling thread for d seconds.

delete_alarm a will stop the calls to the function associated to a.

delete_eol_spaces s returns a fresh copy of s with any end of line spaces removed.

Prints a deprecation warning.

Return the descriptor corresponding to an input channel.

Return the descriptor corresponding to an input channel.

Return the descriptor corresponding to an output channel.

Return the descriptor corresponding to an output channel.

did_you_mean ppf get_choices hints that the user may have meant one of the option returned by calling get_choices.

Set difference.

Return the size (dimension) of the given one-dimensional big array.

Return the first dimension of the given three-dimensional big array.

Return the first dimension of the given two-dimensional big array.

Return the second dimension of the given three-dimensional big array.

Return the second dimension of the given two-dimensional big array.

Return the third dimension of the given three-dimensional big array.

Genarray.dims a returns all dimensions of the big array a, as an array of integers of length Genarray.num_dims a.

The directory separator (e.g.

See Filename.basename.

Test if two sets are disjoint.

disjoint_union m1 m2 contains all bindings from m1 and m2.

Set display mode on or off.

Integer division.

Integer division.

Integer division.

Integer division.

Floating-point division.

Division

Create a docstring

Get the text of a docstring

Get the location of a docstring

Return the socket domain adequate for the given socket address.

Return the socket domain adequate for the given socket address.

Same as Format.fprintf, except the formatter is the last argument.

draw_arc x y rx ry a1 a2 draws an elliptical arc with center x,y, horizontal radius rx, vertical radius ry, from angle a1 to angle a2 (in degrees).

See Graphics.draw_string.

draw_circle x y r draws a circle with center x,y and radius r.

draw_ellipse x y rx ry draws an ellipse with center x,y, horizontal radius rx and vertical radius ry.

Draw the given image with lower left corner at the given point.

draw_poly polygon draws the given polygon.

draw_poly_line points draws the line that joins the points given by the array argument.

draw_rect x y w h draws the rectangle with lower left corner at x,y, width w and height h.

draw_segments segments draws the segments given in the array argument.

Draw a character or a character string with lower left corner at current position.

Same as drop_ppx_context_str, but for signatures.

Drop the ocaml.ppx.context attribute from a structure.

A value of type position, guaranteed to be different from any valid position.

Convert an image to a color matrix.

Return a new file descriptor referencing the same file as the given descriptor.

Return a new file descriptor referencing the same file as the given descriptor.

dup2 fd1 fd2 duplicates fd1 to fd2, closing fd2 if already opened.

dup2 fd1 fd2 duplicates fd1 to fd2, closing fd2 if already opened.

edit_distance a b cutoff computes the edit distance between strings a and b.

Return the list of all elements of the given set.

Return () if the stream is empty, else raise Stream.Failure.

The empty set.

The empty sequence, containing no elements.

The empty map.

A byte sequence of size 0.

A byte sequence of size 0.

Control whether the OCaml runtime system can emit warnings on stderr.

enabled is true if the compiler is configured with spacetime and false otherwise

Scanning.end_of_input ic tests the end-of-input condition of the given Scanf.Scanning.in_channel formatted input channel.

Return the process environment, as an array of strings with the format ``variable=value''.

Return the process environment, as an array of strings with the format ``variable=value''.

Same as Printf.fprintf, but output on stderr.

Same as fprintf above, but output on err_formatter.

The difference between 1.0 and the smallest exactly representable floating-point number greater than 1.0.

Returns true iff the given lists have the same length and content with respect to the given equality function.

The equal function for target ints.

equal u u' is u = u'.

The equal function for strings.

The equal function for strings.

equal s1 s2 tests whether the sets s1 and s2 are equal, that is, contain equal elements.

equal ~ok ~error r0 r1 tests equality of r0 and r1 using ok and error to respectively compare values wrapped by Ok _ and Error _.

equal eq o0 o1 is true iff o0 and o1 are both None or if they are Some v0 and Some v1 and eq v0 v1 is true.

The equal function for native ints.

equal cmp m1 m2 tests whether the maps m1 and m2 are equal, that is, contain equal keys and associate them with equal data.

The equal function for int64s.

The equal function for int32s.

The equality predicate used to compare keys.

The equality predicate used to compare keys.

The equal function for floating-point numbers, compared using Float.compare.

The equal function for 16-character digest.

The equal function for chars.

The equality function for byte sequences.

The equality function for byte sequences.

A formatter to write to standard error.

error e is Error e.

Convert an error description to a printable message.

Return a string describing the given error code.

Return a string describing the given error code.

Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.

Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.

Return a string representing the given character, with special characters escaped following the lexical conventions of OCaml.

Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.

Return a copy of the argument, with special characters represented by escape sequences, following the lexical conventions of OCaml.

Establish a server on the given address.

Establish a server on the given address.

The name of the file containing the executable currently running.

execv prog args execute the program in file prog, with the arguments args, and the current process environment.

execv prog args execute the program in file prog, with the arguments args, and the current process environment.

Same as UnixLabels.execv, except that the third argument provides the environment to the program executed.

Same as Unix.execv, except that the third argument provides the environment to the program executed.

Same as UnixLabels.execv, except that the program is searched in the path.

Same as Unix.execv, except that the program is searched in the path.

Same as UnixLabels.execve, except that the program is searched in the path.

Same as Unix.execve, except that the program is searched in the path.

exists p s checks if at least one element of the set satisfies the predicate p.

exists p m checks if at least one binding of the map satisfies the predicate p.

exists p [a1; ...; an] checks if at least one element of the list satisfies the predicate p.

exists p [a1; ...; an] checks if at least one element of the list satisfies the predicate p.

Array.exists p [|a1; ...; an|] checks if at least one element of the array satisfies the predicate p.

Array.exists p [|a1; ...; an|] checks if at least one element of the array satisfies the predicate p.

Same as List.exists, but for a two-argument predicate.

Same as List.exists, but for a two-argument predicate.

Terminate prematurely the currently executing thread.

Printexc.exn_slot_id returns an integer which uniquely identifies the constructor used to create the exception value exn (in the current runtime).

Printexc.exn_slot_name exn returns the internal name of the constructor used to create the exception value exn.

Exponential.

Exponentiation.

expm1 x computes exp x -. 1.0, giving numerically-accurate results even if x is close to 0.0.

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.

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 name is the shortest suffix ext of name0 where:

Encode an error into an 'ocaml.error' extension node which can be inserted in a generated Parsetree.

Same as List.sort or List.stable_sort, whichever is faster on typical input.

Same as List.sort or List.stable_sort, whichever is faster on typical input.

Same as Array.sort or Array.stable_sort, whichever is faster on typical input.

Same as Array.sort or Array.stable_sort, whichever is faster on typical input.

Change the permissions of an opened file.

Change the permissions of an opened file.

Change the owner uid and owner gid of an opened file.

Change the owner uid and owner gid of an opened file.

Return the digest of the file whose name is given.

Test if a file with the given name exists.

Weak.fill ar ofs len el sets to el all pointers of ar from ofs to ofs + len - 1.

fill s start len c modifies s in place, replacing len characters with c, starting at start.

fill s start len c modifies s in place, replacing len characters with c, starting at start.

Fill the given big array with the given value.

Fill the given big array with the given value.

Fill the given big array with the given value.

Fill the given big array with the given value.

Set all elements of a big array to a given value.

Array.fill a ofs len x modifies the array a in place, storing x in elements number ofs to ofs + len - 1.

Array.fill a ofs len x modifies the array a in place, storing x in elements number ofs to ofs + len - 1.

Fill an elliptical pie slice with the current color.

Fill a circle with the current color.

Fill an ellipse with the current color.

Fill the given polygon with the current color.

fill_rect x y w h fills the rectangle with lower left corner at x,y, width w and height h, with the current color.

filter p s returns the set of all elements in s that satisfy predicate p.

Remove from the sequence the elements that do not satisfy the given predicate.

filter p m returns the map with all the bindings in m that satisfy predicate p.

filter p l returns all the elements of the list l that satisfy the predicate p.

filter p l returns all the elements of the list l that satisfy the predicate p.

filter_map f l applies f to every element of l, filters out the None elements and returns the list of the arguments of the Some elements.

Apply the function to every element; if f x = None then x is dropped; if f x = Some y then y is returned.

Hashtbl.filter_map_inplace f tbl applies f to all bindings in table tbl and update each binding depending on the result of f.

finalise f v registers f as a finalisation function for v.

same as Gc.finalise except the value is not given as argument.

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 t x returns an instance of x found in t.

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 x m returns the current binding of x in m, or raises Not_found if no such binding exists.

find p l returns the first element of the list l that satisfies the predicate p.

find p l returns the first element of the list l that satisfies the predicate p.

Hashtbl.find tbl x returns the current binding of x in tbl, or raises Not_found if no such binding exists.

find_all t x returns a list of all the instances of x found in t.

find_all is another name for List.filter.

find_all is another name for List.filter.

Hashtbl.find_all tbl x returns the list of all data associated with x in tbl.

find_first f s, where f is a monotonically increasing function, returns the lowest element e of s such that f e, or raises Not_found if no such element exists.

find_first f m, where f is a monotonically increasing function, returns the binding of m with the lowest key k such that f k, or raises Not_found if no such key exists.

find_first_opt f s, where f is a monotonically increasing function, returns an option containing the lowest element e of s such that f e, or None if no such element exists.

find_first_opt f m, where f is a monotonically increasing function, returns an option containing the binding of m with the lowest key k such that f k, or None if no such key exists.

find_last f s, where f is a monotonically decreasing function, returns the highest element e of s such that f e, or raises Not_found if no such element exists.

find_last f m, where f is a monotonically decreasing function, returns the binding of m with the highest key k such that f k, or raises Not_found if no such key exists.

find_last_opt f s, where f is a monotonically decreasing function, returns an option containing the highest element e of s such that f e, or None if no such element exists.

find_last_opt f m, where f is a monotonically decreasing function, returns an option containing the binding of m with the highest key k such that f k, or None if no such key exists.

find_opt t x returns an instance of x found in t or None if there is no such element.

find_opt x s returns the element of s equal to x (according to Ord.compare), or None if no such element exists.

find_opt x m returns Some v if the current binding of x in m is v, or None if no such binding exists.

find p l returns the first element of the list l that satisfies the predicate p.

find_opt p l returns the first element of the list l that satisfies the predicate p, or None if there is no value that satisfies p in the list l.

Hashtbl.find_opt tbl x returns the current binding of x in tbl, or None if no such binding exists.

first_chars s n returns the first n characters of s.

Map each element to a subsequence, then return each element of this sub-sequence in turn.

Same as concat.

An alias for concat.

Random.float bound returns a random floating-point number between 0 and bound (inclusive).

See Bigarray.char.

See Bigarray.char.

Return the floating-point number whose internal representation, according to the IEEE 754 floating-point 'double format' bit layout, is the given int64.

Return the floating-point number whose internal representation, according to the IEEE 754 floating-point 'single format' bit layout, is the given int32.

Round below to an integer value.

Discard the contents of the buffer and reset the current position to 0.

Returns the material printed with str_formatter, flushes the formatter and resets the corresponding buffer.

flush_symbolic_output_buffer sob returns the contents of buffer sob and resets buffer sob.

fold f t init computes (f d1 (... (f dN init))) where d1 ... dN are the elements of t in some unspecified order.

fold f accu s is (f (... (f (f accu x1) x2) ...) xn) where x1 is the top of the stack, x2 the second element, and xn the bottom element.

fold f s a computes (f xN ... (f x2 (f x1 a))...), where x1 ... xN are the elements of s, in increasing order.

fold ~ok ~error r is ok v if r is Ok v and error e if r is Error e.

fold f accu q is equivalent to List.fold_left f accu l, where l is the list of q's elements.

fold ~none ~some o is none if o is None and some v if o is Some v.

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.

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.

Traverse the sequence from left to right, combining each element with the accumulator using the given function.

List.fold_left f a [b1; ...; bn] is f (... (f (f a b1) b2) ...) bn.

List.fold_left f a [b1; ...; bn] is f (... (f (f a b1) b2) ...) bn.

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.

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.

List.fold_left2 f a [b1; ...; bn] [c1; ...; cn] is f (... (f (f a b1 c1) b2 c2) ...) bn cn.

List.fold_left2 f a [b1; ...; bn] [c1; ...; cn] is f (... (f (f a b1 c1) b2 c2) ...) bn cn.

List.fold_right f [a1; ...; an] b is f a1 (f a2 (... (f an b) ...)).

List.fold_right f [a1; ...; an] b is f a1 (f a2 (... (f an b) ...)).

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.

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.

List.fold_right2 f [a1; ...; an] [b1; ...; bn] c is f a1 b1 (f a2 b2 (... (f an bn c) ...)).

List.fold_right2 f [a1; ...; an] [b1; ...; bn] c is f a1 b1 (f a2 b2 (... (f an bn c) ...)).

for_all p s checks if all elements of the set satisfy the predicate p.

for_all p m checks if all the bindings of the map satisfy the predicate p.

for_all p [a1; ...; an] checks if all elements of the list satisfy the predicate p.

for_all p [a1; ...; an] checks if all elements of the list satisfy the predicate p.

Array.for_all p [|a1; ...; an|] checks if all elements of the array satisfy the predicate p.

Array.for_all p [|a1; ...; an|] checks if all elements of the array satisfy the predicate p.

Same as List.for_all, but for a two-argument predicate.

Same as List.for_all, but for a two-argument predicate.

force x forces the suspension x and returns its result.

Force a new line in the current pretty-printing box.

force_val x forces the suspension x and returns its result.

Default background and foreground colors (usually, either black foreground on a white background or white foreground on a black background).

Fork a new process.

Fork a new process.

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_from_string s fmt converts a string argument to a format string, according to the given format string fmt.

formatter_of_buffer b returns a new formatter writing to buffer b.

formatter_of_out_channel oc returns a new formatter writing to the corresponding output channel oc.

formatter_of_out_functions out_funs returns a new formatter that writes with the set of output functions out_funs.

formatter_of_symbolic_output_buffer sob returns a symbolic formatter that outputs to symbolic_output_buffer sob.

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.

frexp f returns the pair of the significant and the exponent of f.

Stream.from f returns a stream built from the function f.

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.

Scanning.from_channel ic returns a Scanf.Scanning.in_channel formatted input channel which reads from the regular in_channel input channel ic argument.

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.

Create a lexer buffer on the given input channel.

An alias for Scanf.Scanning.open_in above.

An alias for Scanf.Scanning.open_in_bin above.

from_fun f is the same as lazy (f ()) but slightly more efficient.

Scanning.from_function f returns a Scanf.Scanning.in_channel formatted input channel with the given function as its reading method.

Create a lexer buffer with the given function as its reading method.

Convert a hexadecimal representation back into the corresponding digest.

Scanning.from_string s returns a Scanf.Scanning.in_channel formatted input channel which reads from the given string.

Same as from_bytes but take a string as argument instead of a byte sequence.

Create a lexer buffer which reads from the given string.

from_val v returns an already-forced suspension of v.

Return the information for the file associated with the given descriptor.

Return the information for the file associated with the given descriptor.

Flush file buffers to disk.

Truncates the file corresponding to the given descriptor to the given size.

See Unix.ftruncate.

Truncates the file corresponding to the given descriptor to the given size.

Same as Random.init but takes more data as seed.

Do a minor collection, finish the current major collection cycle, and perform a complete new cycle.

Same as Str.split_delim, but returns the delimiters as well as the substrings contained between delimiters.

Return the generic big array corresponding to the given zero-dimensional big array.

Return the generic big array corresponding to the given one-dimensional big array.

Return the generic big array corresponding to the given two-dimensional big array.

Return the generic big array corresponding to the given three-dimensional big array.

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.