Module Char
structure Char = struct ... 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.
Raise Invalid_argument "Char.chr" 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 Objective Caml.
val lowercase : char -> char
Convert the given character to its equivalent lowercase character.
val uppercase : char -> char
Convert the given character to its equivalent uppercase character.