NAME

Char - Character operations.

Module

Module Char

Documentation

Module Char
: sig end

Character operations.

val code : char -> int

Return the ASCII code of the argument.

val chr : int -> char

Return the character with the given ASCII code.

Raises Invalid_argument if the argument is outside the range 0--255.

val escaped : char -> string

Return a string representing the given character, with special characters escaped following the lexical conventions of OCaml. All characters outside the ASCII printable range (32..126) are escaped, as well as backslash, double-quote, and single-quote.

val lowercase_ascii : char -> char

Convert the given character to its equivalent lowercase character, using the US-ASCII character set.

Since 4.03

val uppercase_ascii : char -> char

Convert the given character to its equivalent uppercase character, using the US-ASCII character set.

Since 4.03

type t = char

An alias for the type of characters.

val compare : t -> t -> int

The comparison function for characters, with the same specification as compare . Along with the type t , this function compare allows the module Char to be passed as argument to the functors Set.Make and Map.Make .

val equal : t -> t -> bool

The equal function for chars.

Since 4.03

val seeded_hash : int -> t -> int

A seeded hash function for characters, with the same output value as Hashtbl.seeded_hash . This function allows this module to be passed as argument to the functor Hashtbl.MakeSeeded .

Since 5.1

val hash : t -> int

An unseeded hash function for characters, with the same output value as Hashtbl.hash . This function allows this module to be passed as argument to the functor Hashtbl.Make .

Since 5.1