module Char: sig .. end
Character operations.
type char
An alias for the type of characters.
include Comparable.S
include Sexpable.S
include Binable.S
include Hashable.S
val to_int : t -> int
Return the ASCII code of the argument.
val of_int : int -> t option
Return the character with the given ASCII code or None is the argument is outside
the range 0 to 255.
val of_int_exn : int -> t
Return the character with the given ASCII code. Raise Failure if the argument is
outside 0 to 255.
val unsafe_of_int : int -> t
val escaped : t -> string
Return a string representing the given character, with special characters escaped
following the lexical conventions of Objective Caml.
val lowercase : t -> t
Convert the given character to its equivalent lowercase character.
val uppercase : t -> t
Convert the given character to its equivalent uppercase character.
val to_string : t -> string
val is_digit : t -> bool
'0' - '9'
val is_lowercase : t -> bool
'a' - 'z'
val is_uppercase : t -> bool
'A' - 'Z'
val is_alpha : t -> bool
'a' - 'z' or 'A' - 'Z'
val is_alphanum : t -> bool
'a' - 'z' or 'A' - 'Z' or '0' - '9'
val is_print : t -> bool
' ' - '~'
val is_whitespace : t -> bool
' ' or '\t' or '\r' or '\n'
val get_digit : t -> int option
Return Some i if is_digit c and None otherwise.
val get_digit_exn : t -> int
Return i if is_digit c. Raises Failure otherwise.
val min_value : t
val max_value : t