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 : char -> char
Deprecated. Functions operating on Latin-1 character set are deprecated.
Convert the given character to its equivalent lowercase character, using the ISO Latin-1 (8859-1) character set.
val uppercase : char -> char
Deprecated. Functions operating on Latin-1 character set are deprecated.
Convert the given character to its equivalent uppercase character, using the ISO Latin-1 (8859-1) character set.
val lowercase_ascii : char -> char
Convert the given character to its equivalent lowercase character, using the US-ASCII character set.
Since 4.03.0
val uppercase_ascii : char -> char
Convert the given character to its equivalent uppercase character, using the US-ASCII character set.
Since 4.03.0
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 4.03.0