UChar

# Module UChar

    module UChar: sig .. end

Unicode (ISO-UCS) characters.

This module implements Unicode (actually ISO-UCS) characters. All 31-bit code points are allowed.

    type t

Unicode characters. All 31-bit code points are allowed.

    exception Out_of_range

    val char_of : t -> char

`char_of u` returns the Latin-1 representation of `u`. If `u` can not be represented by Latin-1, raises Out_of_range

    val of_char : char -> t

`of_char c` returns the Unicode character of the Latin-1 character `c`

    val code : t -> int

`code u` returns the Unicode code number of `u`. If the value can not be represented by a positive integer, raise Out_of_range

    val chr : int -> t

`code n` returns the Unicode character with the code number `n`. If n >= 2^32 or n < 0, raises `invalid_arg`

    val uint_code : t -> int

`uint_code u` returns the Unicode code number of `u`. The returned int is unsigned, that is, on 32-bit platforms, the sign bit is used for storing the 31-th bit of the code number.

    val chr_of_uint : int -> t

`chr_of_uint n` returns the Unicode character of the code number `n`. `n` is interpreted as unsigned, that is, on 32-bit platforms, the sign bit is treated as the 31-th bit of the code number. If n exceeds 31-bit values, then raise `Invalid_arg`.

    val unsafe_chr_of_uint : int -> t

Unsafe version of `UChar.chr_of_uint`. No check of its argument is performed.

    val eq : t -> t -> bool

Equality by code point comparison

    val compare : t -> t -> int

`compare u1 u2` returns, a value > 0 if `u1` has a larger Unicode code number than `u2`, 0 if `u1` and `u2` are the same Unicode character, a value < 0 if `u1` has a smaller Unicode code number than `u2`.

    type uchar = t

Aliases of `type t`

    val int_of_uchar : uchar -> int

Alias of `uint_code`

    val uchar_of_int : int -> uchar

Alias of `chr_of_uint`