Index of values

Integer multiplication.

Exponentiation

Floating-point multiplication

!r returns the current contents of reference r.

Negation of Pervasives.(==).

The boolean ``and''.

Integer addition.

Floating-point addition

Integer subtraction.

Floating-point subtraction

Integer division.

Floating-point division.

r := a stores the value of a in reference r.

See Pervasives.(>=).

See Pervasives.(>=).

Negation of Pervasives.(=).

e1 = e2 tests for structural equality of e1 and e2.

e1 == e2 tests for physical equality of e1 and e2.

See Pervasives.(>=).

Structural ordering functions.

List concatenation.

String concatenation.

f1 ^^ f2 catenates formats f1 and f2.

n asr m shifts n to the right by m bits.

Bitwise logical and.

Bitwise logical or.

n lsl m shifts n to the left by m bits.

n lsr m shifts n to the right by m bits.

Bitwise logical exclusive or.

Integer remainder.

The boolean ``or''.

Unary negation.

Unary negation.

Return the absolute value of the argument.

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 the argument.

Accept connections on the given socket.

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

See Pervasives.atan2.

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.

add db key data inserts the pair (key, data) in the database db.

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_channel b ic n reads exactly n character 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 the buffer b.

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

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

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

Schedule a SIGALRM signal after the given number of seconds.

Align the documentation strings by inserting spaces at the first 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 only allows references to the units named in 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.

Catenate 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.

Argument.

The command line arguments given to the process.

Print the current status of the arithmetic flags.

Sort an array in increasing order according to an ordering predicate.

See Pervasives.atan2.

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.

Same as ListLabels.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.

Register the given function to be called at program termination time.

See Pervasives.atan2.

The usual trigonometric functions.

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

See Graphics.foreground.

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

Scanning.beginning_of_input ib tests the beginning of input condition of the given scanning buffer.

Bind a socket to an address.

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).

String.blit src srcoff dst dstoff len copies len characters from string src, starting at character number srcoff, to string dst, starting at character number dstoff.

String.blit src srcoff dst dstoff len copies len characters from string src, starting at character number srcoff, to string dst, starting at character number dstoff.

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.

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

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.

Convert the given string to a boolean.

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).

Same as sprintf above, but instead of printing on a string, writes into the given extensible buffer.

bscanf ib fmt r1 ... rN f reads arguments for the function f from the scanning buffer ib according to the format string fmt, and applies f to these values.

bscanf_format ib fmt f reads a format string token from the scannning buffer ib, 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 a copy of the argument, with the first character set to uppercase.

Return a copy of the argument, with the first character set to uppercase.

Return the number of elements of a set.

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.

See Pervasives.floor.

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.

Return the character with the given ASCII code.

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.

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

Change the permissions of the named file.

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

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

Return the given file name without its extension.

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

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

Return the character with the given ASCII code.

Change the process root directory.

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

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.

Erase the graphics window.

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

Empty the parser stack.

Close a file descriptor.

Close the given descriptor.

Closes the most recently opened pretty-printing box.

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

Close the given channel.

Same as close_in, but ignore all errors.

Close the given channel, flushing all buffered write operations.

Same as close_out, but ignore all errors.

Close channels opened by Unix.open_process, 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 Unix.open_process_in, 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.

close_tag () closes the most recently opened tag t.

Closes the most recently opened tabulation box.

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

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

A total ordering function over the set elements.

Total ordering between sets.

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 native integers, with the same specification as Pervasives.compare.

A total ordering function over the keys.

Total ordering between maps.

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

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

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

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.

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.

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.

String.contains_from s start c tests if character c appears in the substring of s starting from start to the end of s.

String.contains_from s start c tests if character c appears in the substring of s starting from start to the end of s.

Return a copy of the current contents of the buffer.

Return a copy of the given string.

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.

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.

See Pervasives.atan2.

See Pervasives.tanh.

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).

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

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

String.create n returns a fresh string of length n.

String.create n returns a fresh string of length n.

Return a new stack, initially empty.

Return a new queue, initially empty.

Return a new mutex.

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

create n returns a fresh buffer, initially empty.

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_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_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.

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.

See Marshal.header_size.

Decrement the integer contained in the given reference.

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.

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

Return the descriptor corresponding to an input channel.

Return the descriptor corresponding to an output channel.

Set difference.

See Filename.basename.

Set display mode on or off.

Integer division.

Integer division.

Integer division.

Division

Return the socket domain adequate for the given socket address.

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.

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.

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

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 map.

Scanning.end_of_input ib tests the end-of-input condition of the given scanning buffer.

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 smallest positive float x such that 1.0 +. x <> 1.0.

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

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 equality predicate used to compare keys.

A formatter to use with formatting functions below for output to standard error.

Return a string describing the given error code.

Convert an error description to a printable message.

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

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

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

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.

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

Same as Unix.execv, 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 [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.

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

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

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.

Exponential.

Exponentiation.

Raise exception Failure with the given string.

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 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.

String.fill s start len c modifies string s in place, replacing the characters number start to start + len - 1 by c.

String.fill s start len c modifies string s in place, replacing the characters number start to start + len - 1 by c.

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.

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.

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

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 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 db key returns the data associated with the given key in the database opened for the descriptor db.

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

find_all is another name for ListLabels.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.

first_chars s n returns the first n characters of s.

See Dbm.nextkey.

Same as concat.

Same as concat.

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

Same as Pervasives.float_of_int.

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.

Convert an integer to floating-point.

Convert the given string to a float.

Round the given float to an integer value.

Flush the buffer associated with the given output channel, performing all pending writes on that channel.

Flush all open output channels; ignore errors.

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.

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

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

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

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.

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 [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.

Same as ListLabels.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.

Forces a newline in the current 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.

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

format_of_string s returns a format string read from the string literal s.

formatter_of_buffer b returns a new formatter writing to buffer b.

formatter_of_out_channel oc returns a new formatter that writes to the corresponding channel oc.

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 ff format arg1 ... argN formats the arguments arg1 to argN according to the format string format, and outputs the resulting string on the formatter ff.

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

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

Scanning.from_channel ic returns a scanning buffer which reads one character at a time from the input channel ic, starting at the current reading position.

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.

Bufferized file reading in text mode.

Bufferized file reading in binary mode.

Scanning.from_function f returns a scanning buffer with the given function as its reading method.

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

Scanning.from_string s returns a scanning buffer which reads from the given string.

Marshal.from_string 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 string buff, starting at position ofs.

Create a lexer buffer which reads from the given string.

Same as Scanf.bscanf, but reads from the given channel.

Return the first component of a pair.

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

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.

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.

String.get s n returns character number n in string s.

String.get s n returns character number n in string s.

Return the current values of the GC parameters in a control record.

Array.get a n returns the element number n of array a.

Array.get a n returns the element number n of array a.

Return the current output functions of the pretty-printer, including line breaking and indentation functions.

See Arith_status.set_approx_printing.

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.

Return the text of the ellipsis.

See Arith_status.set_error_when_null_denominator.

See Arith_status.set_floating_precision.

Return the current output functions of the pretty-printer.

Return the current tag functions of the pretty-printer.

Capture the contents of a rectangle on the screen as an image.

Returns the position of the right margin.

Return the current status of tags printing and tags marking.

Returns the maximum number of boxes allowed before ellipsis.

Return the value of the maximum indentation limit (in characters).

See Arith_status.set_normalize_ratio.

See Arith_status.set_normalize_ratio_when_printing.

Return the current state of the generator used by the basic functions.

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.

Return the name of the current working directory.

Return the current working directory of the process.

Return the effective group id under which the process runs.

Return the value associated to a variable in the process environment.

Return the value associated to a variable in the process environment.

Return the effective user id under which the process runs.

Return the group id of the user executing the process.

Find an entry in group with the given group id, or raise Not_found.

Find an entry in group with the given name, or raise Not_found.

Return the list of groups to which the user executing the process belongs.

Find an entry in hosts with the given address, or raise Not_found.

Find an entry in hosts with the given name, or raise Not_found.

Return the name of the local host.

Return the current status of the given interval timer.

Return the login name of the user executing the process.

getnameinfo addr opts returns the host name and service name corresponding to the socket address addr.

Return the address of the host connected to the given socket.

Return the pid of the process.

Return the pid of the parent process.

Find an entry in protocols with the given name, or raise Not_found.

Find an entry in protocols with the given protocol number, or raise Not_found.

Find an entry in passwd with the given name, or raise Not_found.

Find an entry in passwd with the given user id, or raise Not_found.

Find an entry in services with the given name, or raise Not_found.

Find an entry in services with the given service number, or raise Not_found.

Return the address of the given socket.

Return the current status of a boolean-valued option in the given socket.

Same as Unix.getsockopt for a socket option whose value is a floating-point number.

Same as Unix.getsockopt for an integer-valued socket option.

Same as Unix.getsockopt for a socket option whose value is an int option.

Same as Unix.time, but with resolution better than 1 second.

Return the user id of the user executing the process.

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 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.

Convert a time in seconds, as returned by Unix.time, into a date and a time.

group_beginning n returns the position of the first character of the substring that was matched by the nth group of the regular expression.

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.

guard fn returns the event that, when synchronized, computes fn() and behaves as the resulting event.

handle_unix_error f x applies f to x and returns the result.

A hashing function on keys.

Hashtbl.hash x associates a positive integer to any value of any type.

Hashtbl.hash_param n m x computes a hash value for x, with the same properties as for hash.

Return the first element of the given list.

Return the first element of the given list.

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.

The complex number i.

Return an integer identifying this object, unique for the current execution of the program.

Same as Printf.fprintf, but does not print anything.

Same as fprintf above, but does not print anything.

Discard the value of its argument and return ().

Return the size (number of characters) of the regular file on which the given channel is opened.

Create an input channel reading from the given descriptor.

Increment the integer contained in the given reference.

String.index s c returns the position of the leftmost occurrence of character c in string s.

String.index s c returns the position of the leftmost occurrence of character c in string s.

Same as StringLabels.index, but start searching at the character position given as second argument.

Same as String.index, but start searching at the character position given as second argument.

A special IPv6 address, for use only with bind, representing all the Internet addresses that the host machine possesses.

A special IPv6 address representing the host machine (::1).

A special IPv4 address, for use only with bind, representing all the Internet addresses that the host machine possesses.

A special IPv4 address representing the host machine (127.0.0.1).

Conversion from the printable representation of an Internet address to its internal representation.

Positive infinity.

Initialize the generator, using the argument as a seed.

Initialize the Dynlink library.

Array.init n f returns a fresh array of length n, with element number i initialized to the result of f i.

Array.init n f returns a fresh array of length n, with element number i initialized to the result of f i.

input ic buf pos len reads up to len characters from the given channel ic, storing them in string buf, starting at character number pos.

Read a digest from the given input channel.

Read an integer encoded in binary format (4 bytes, big-endian) from the given input channel.

Same as Pervasives.input_char, but return the 8-bit integer representing the character.

Read one character from the given input channel.

Read characters from the given input channel, until a newline character is encountered.

Read the representation of a structured value, as produced by Pervasives.output_value, and return the corresponding value.

Random.int bound returns a random integer between 0 (inclusive) and bound (exclusive).

Random.int32 bound returns a random integer between 0 (inclusive) and bound (exclusive).

Random.int64 bound returns a random integer between 0 (inclusive) and bound (exclusive).

Return the ASCII code of the argument.

Truncate the given floating-point number to an integer.

Convert the given string to an integer.

Set intersection.

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.

Multiplicative inverse (1/z).

Raise exception Invalid_argument with the given string.

Returns true if the given name refers to a directory, false if it refers to another kind of file.

Return true if the given stack is empty, false otherwise.

Test whether a set is empty or not.

Return true if the given queue is empty, false otherwise.

Test whether a map is empty or not.

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.

Return true if the file name is relative to the current directory, false if it is absolute (i.e.

Return true if the given file descriptor refers to a terminal or console window, false otherwise.

iter f t calls f on each element of t, in some unspecified order.

String.iter f s applies function f in turn to all the characters of s.

String.iter f s applies function f in turn to all the characters of s.

Stream.iter f s scans the whole stream s, applying function f in turn to each stream element encountered.

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 f s applies f in turn to all elements of s.

iter f q applies f in turn to all elements of q, from the least recently entered to the most recently entered.

iter f m applies f to all bindings in map m.

List.iter f [a1; ...; an] applies function f in turn to a1; ...; an.

List.iter f [a1; ...; an] applies function f in turn to a1; ...; an.

Hashtbl.iter f tbl applies f to all bindings in table tbl.

iter f db applies f to each (key, data) pair in the database db.

Array.iter f a applies function f in turn to all the elements of a.

Array.iter f a applies function f in turn to all the elements of a.

List.iter2 f [a1; ...; an] [b1; ...; bn] calls in turn f a1 b1; ...; f an bn.

List.iter2 f [a1; ...; an] [b1; ...; bn] calls in turn f a1 b1; ...; f an bn.

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.

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.

Remove the first element of the stream, possibly unfreezing it before.

Same as bprintf, but instead of returning immediately, passes the buffer to its first argument at the end of printing.

Return true if a keypress is available; that is, if read_key would not block.

Formatted output functions with continuations.

Same as fprintf above, but instead of returning immediately, passes the formatter to its first argument at the end of printing.

kill pid sig sends signal number sig to the process with id pid.

A deprecated synonym for ksprintf.

A deprecated synonym for ksprintf.

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 scanning buffer and the exception that aborted the scanning process.

Same as sprintf above, but instead of returning the string, passes it to the first argument.

Same as sprintf above, but instead of returning the string, passes it to the first argument.

last_chars s n returns the last n characters of s.

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

lazy_from_val v returns an already-forced suspension of v This is for special purposes only and should not be confused with lazy (v).

lazy_is_val x returns true if x has already been forced and did not raise an exception.

ldexp x n returns x *. 2 ** n.

Weak.length ar returns the length (number of elements) of ar.

Return the length (number of characters) of the given string.

Return the length (number of characters) of the given string.

Return the number of elements in a stack.

Return the number of elements in a queue.

Return the length (number of elements) of the given list.

Return the length (number of elements) of the given list.

Hashtbl.length tbl returns the number of bindings in tbl.

Return the number of characters currently contained in the buffer.

Return the length (number of elements) of the given array.

Return the length (number of elements) of the given array.

Lexing.lexeme lexbuf returns the string matched by the regular expression.

Lexing.lexeme_char lexbuf i returns character number i in the matched string.

Lexing.lexeme_end lexbuf returns the offset in the input stream of the character following the last character of the matched string.

Like lexeme_end, but return a complete position instead of an offset.

Lexing.lexeme_start lexbuf returns the offset in the input stream of the first character of the matched string.

Like lexeme_start, but return a complete position instead of an offset.

Draw a line with endpoints the current point and the given point, and move the current point to the given point.

link source dest creates a hard link named dest to the file named source.

Sort a list in increasing order according to an ordering predicate.

Set up a socket for receiving connection requests.

Bitwise logical negation.

Load the given bytecode object file (.cmo file) or bytecode library file (.cma file), and link it with the running program.

Same as loadfile, except that the compilation units just loaded are hidden (cannot be referenced) from other modules dynamically loaded afterwards.

Convert a time in seconds, as returned by Unix.time, into a date and a time.

Lock the given mutex.

lockf fd cmd size puts a lock on a region of the file opened as fd.

Natural logarithm.

Natural logarithm (in base e).

Base 10 logarithm.

Bitwise logical and.

Bitwise logical and.

Bitwise logical and.

Bitwise logical negation

Bitwise logical negation

Bitwise logical negation

Bitwise logical or.

Bitwise logical or.

Bitwise logical or.

Bitwise logical exclusive or.

Bitwise logical exclusive or.

Bitwise logical exclusive or.

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.

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.

Convert the given character to its equivalent lowercase character.

Set the current position for a file descriptor

Same as Unix.stat, but in case the file is a symbolic link, return the information for the link itself.

Do a minor collection and finish the current major collection cycle.

Do a minor collection and a slice of major collection.

String.make n c returns a fresh string of length n, filled with the character c.

String.make n c returns a fresh string of length n, filled with the character c.

Create a new state and initialize it with the given seed.

Array.make n x returns a fresh array of length n, initialized with x.

Array.make n x returns a fresh array of length n, initialized with x.

make_formatter out flush returns a new formatter that writes according to the output function out, and the flushing function flush.

Convert the given color matrix to an image.

Construct the lexer function.

Array.make_matrix dimx dimy e returns a two-dimensional array (an array of arrays) with first dimension dimx and second dimension dimy.

Array.make_matrix dimx dimy e returns a two-dimensional array (an array of arrays) with first dimension dimx and second dimension dimy.

Create a new state and initialize it with a system-dependent low-entropy seed.

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.

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.

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.

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) |].

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) |].

List.map2 f [a1; ...; an] [b1; ...; bn] is [f a1 b1; ...; f an bn].

List.map2 f [a1; ...; an] [b1; ...; bn] is [f a1 b1; ...; f an bn].

Same as Map.S.map, but the function receives as arguments both the key and the associated value for each binding of the map.

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.

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.

match_beginning() returns the position of the first character of the substring that was matched by Str.string_match, Str.search_forward or Str.search_backward.

match_end() returns the position of the character following the last character of the substring that was matched by string_match, search_forward or search_backward.

matched_group n s returns the substring of s that was matched by the nth group \(...\) of the regular expression during the latest Str.string_match, Str.search_forward or Str.search_backward.

matched_string s returns the substring of s that was matched by the latest Str.string_match, Str.search_forward or Str.search_backward.

Return the greater of the two arguments.

Maximum length of a normal array.

Same as Set.S.min_elt, but returns the largest element of the given set.

The largest positive finite value of type float.

The greatest representable integer.

The greatest representable native integer, either 2³¹ - 1 on a 32-bit platform, or 2⁶³ - 1 on a 64-bit platform.

The greatest representable 64-bit integer, 2⁶³ - 1.

The greatest representable 32-bit integer, 2³¹ - 1.

Maximum length of a string.

mem t x returns true if there is at least one instance of x in t, false otherwise.

mem x s tests whether x belongs to the set s.

mem x m returns true if m contains a binding for x, and false otherwise.

mem a l is true if and only if a is equal to an element of l.

mem a l is true if and only if a is equal to an element of l.

Hashtbl.mem tbl x checks if x is bound in tbl.

Same as ListLabels.assoc, but simply return true if a binding exists, and false if no bindings exist for the given key.

Same as List.assoc, but simply return true if a binding exists, and false if no bindings exist for the given key.

Same as ListLabels.mem_assoc, but uses physical equality instead of structural equality to compare keys.

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

Same as ListLabels.mem, but uses physical equality instead of structural equality to compare list elements.

Same as List.mem, but uses physical equality instead of structural equality to compare list elements.

merge t x returns an instance of x found in t if any, or else adds x to t and return x.

Merge two lists according to the given predicate.

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 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.

Return the smaller of the two arguments.

Return the smallest element of the given set (with respect to the Ord.compare ordering), or raise Not_found if the set is empty.

The smallest positive, non-zero, non-denormalized value of type float.

The smallest representable integer.

The greatest representable native integer, either -2³¹ on a 32-bit platform, or -2⁶³ on a 64-bit platform.

The smallest representable 64-bit integer, -2⁶³.

The smallest representable 32-bit integer, -2³¹.

Trigger a minor collection.

The native integer -1.

The 64-bit integer -1.

The 32-bit integer -1.

Create a directory with the given permissions.

Create a named pipe with the given permissions.

Convert a date and time, specified by the tm argument, into a time in seconds, as returned by Unix.time.

mod_float a b returns the remainder of a with respect to b.

modf f returns the pair of the fractional and integral part of f.

Return the position of the mouse cursor, relative to the graphics window.

Position the current point.

Multiplication.

Multiplication.

Multiplication.

Multiplication

Scanning.file_name_of_input ib returns the name of the character source for the scanning buffer ib.

A special floating-point value denoting the result of an undefined operation such as 0.0 /. 0.0.

Random.nativeint bound returns a random integer between 0 (inclusive) and bound (exclusive).

Unary negation.

Unary negation.

Unary negation.

Unary negation.

Negative infinity.

Return a new channel.

Return the first element of the stream and remove it from the stream.

Enumerate all keys in the given database, in an unspecified order.

Change the process priority.

Norm: given x + i.y, returns sqrt(x^2 + y^2).

Norm squared: given x + i.y, returns x^2 + y^2.

The boolean negation.

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.

Return the n-th element of the given list.

Return the n-th element of the given list.

get the n-th character of the buffer.

ocaml_version is the version of Objective Caml.

Return the stream of the characters read from the input channel.

Convert the given floating-point number to a native integer, discarding the fractional part (truncate towards 0).

Convert the given floating-point number to a 64-bit integer, discarding the fractional part (truncate towards 0).

Convert the given floating-point number to a 32-bit integer, discarding the fractional part (truncate towards 0).

Convert the given integer (type int) to a native integer (type nativeint).

Convert the given integer (type int) to a 64-bit integer (type int64).

Convert the given integer (type int) to a 32-bit integer (type int32).

Convert the given 32-bit integer (type int32) to a native integer.

Convert the given 32-bit integer (type int32) to a 64-bit integer (type int64).

Return the stream holding the elements of the list in the same order.

Array.of_list l returns a fresh array containing the elements of l.

Array.of_list l returns a fresh array containing the elements of l.

Convert the given native integer (type nativeint) to a 64-bit integer (type int64).

Return the stream of the characters of the string parameter.

Convert the given string to a native integer.

Convert the given string to a 64-bit integer.

Convert the given string to a 32-bit integer.

The native integer 1.

The 64-bit integer 1.

The 32-bit integer 1.

The complex number 1.

open_box d opens a new pretty-printing box with offset d.

Connect to a server at the given address.

Show the graphics window or switch the screen to graphic mode.

open_hbox () opens a new pretty-printing box.

open_hovbox d opens a new pretty-printing box with offset d.

open_hvbox d opens a new pretty-printing box with offset d.

Open the named file for reading, and return a new input channel on that file, positionned at the beginning of the file.

Same as Pervasives.open_in, but the file is opened in binary mode, so that no translation takes place during reads.

open_in mode perm filename opens the named file for reading, as described above.

Open the named file for writing, and return a new output channel on that file, positionned at the beginning of the file.

Same as Pervasives.open_out, but the file is opened in binary mode, so that no translation takes place during writes.

open_out_gen mode perm filename opens the named file for writing, as described above.

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.

Similar to Unix.open_process, but the second argument specifies the environment passed to the command.

High-level pipe and process management.

Same as Unix.open_process_in, but redirect the standard input of the command to a pipe.

Create a sub-window of the current Caml graphics window and return its identifier.

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.

Opens a tabulation box.

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 d opens a new pretty-printing box with offset d.

Open a descriptor on an NDBM database.

Open a descriptor on a directory

Open the named file with the given flags.

Operating system currently executing the Caml program.

Return the size (number of characters) of the regular file on which the given channel is opened.

Create an output channel writing on the given descriptor.

output oc buf pos len writes len characters from string buf, starting at offset pos, to the given output channel oc.

Write a digest on the given output channel.

Write one integer in binary format (4 bytes, big-endian) on the given output channel.

output_buffer oc b writes the current contents of buffer b on the output channel oc.

Write one 8-bit integer (as the single character with that code) on the given output channel.

Write the character on the given output channel.

Write the string on the given output channel.

Write the representation of a structured value of any type to a channel.

Tests if the maximum number of boxes allowed have already been opened.

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

Arg.parse speclist anon_fun usage_msg parses the command line.

Arg.parse_argv ~current args speclist anon_fun usage_msg parses the array args as if it were the command line.

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 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 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.

Wait until a non-ignored, non-blocked signal is delivered.

Return Some of "the first element" of the stream, or None if the stream is empty.

peek q returns the first element in queue q, without removing it from the queue, or raises Empty if the queue is empty.

Create a pipe.

Plot the given point with the current drawing color.

Plot the given points with the current drawing color.

Return the color of the given point in the backing store (see "Double buffering" below).

polar norm arg returns the complex having norm norm and argument arg.

Non-blocking version of Event.sync: offer all the communication possibilities specified in the event to the outside world, and if one can take place immediately, perform it and return Some r where r is the result value of that communication.

pop s removes and returns the topmost element in stack s, or raises Empty if the stack is empty.

pop is a synonym for take.

Return the current reading position for the given channel.

Return the current writing position for the given channel.

Power function.

These functions are the basic ones: usual functions operating on the standard formatter are defined via partial evaluation of these primitives.

pred x is x-1.

Predecessor.

Predecessor.

Predecessor.

Print a character on standard error.

Print a string, followed by a newline character on standard error and flush standard error.

Print a floating-point number, in decimal, on standard error.

Print an integer, in decimal, on standard error.

Print a newline character on standard error, and flush standard error.

Print a string on standard error.

Printexc.print fn x applies fn to x and returns the result.

print_as len str prints str in the current box.

Prints a boolean in the current box.