Module Stdune.Char

include module type of struct include Char end
val code : char -> int

Return the ASCII code of the argument.

val chr : int -> char

Return the character with the given ASCII code.

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

Convert the given character to its equivalent lowercase character, using the ISO Latin-1 (8859-1) character set.

  • deprecated

    Functions operating on Latin-1 character set are deprecated.

val uppercase : char -> char

Convert the given character to its equivalent uppercase character, using the ISO Latin-1 (8859-1) character set.

  • deprecated

    Functions operating on Latin-1 character set are deprecated.

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 equal : t -> t -> bool

The equal function for chars.

  • since 4.03.0
val is_digit : t -> bool

Check if a character belongs to the set {'0'..'9'}.

val is_lowercase_hex : t -> bool

Check if a character belongs to the set {'0'..'9', 'a'..'f'}.

val hash : t -> int
val compare : t -> t -> Ordering.t