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Uchar(3) OCamldoc Uchar(3)

Uchar - Unicode characters.

Module Uchar

Module Uchar : sig end

Unicode characters.

Since 4.03

type t

The type for Unicode characters.

A value of this type represents an Unicode scalar value which is an integer in the ranges 0x0000 ... 0xD7FF or 0xE000 ... 0x10FFFF .

val min : t

min is U+0000.

val max : t

max is U+10FFFF.

val succ : t -> t

succ u is the scalar value after u in the set of Unicode scalar values.

Raises Invalid_argument if u is Uchar.max .

val pred : t -> t

pred u is the scalar value before u in the set of Unicode scalar values.

Raises Invalid_argument if u is Uchar.min .

val is_valid : int -> bool

is_valid n is true iff n is an Unicode scalar value (i.e. in the ranges 0x0000 ... 0xD7FF or 0xE000 ... 0x10FFFF ).

val of_int : int -> t

of_int i is i as an Unicode character.

Raises Invalid_argument if i does not satisfy Uchar.is_valid .

val to_int : t -> int

to_int u is u as an integer.

val is_char : t -> bool

is_char u is true iff u is a latin1 OCaml character.

val of_char : char -> t

of_char c is c as an Unicode character.

val to_char : t -> char

to_char u is u as an OCaml latin1 character.

Raises Invalid_argument if u does not satisfy Uchar.is_char .

val equal : t -> t -> bool

equal u u' is u = u' .

val compare : t -> t -> int

compare u u' is Pervasives.compare u u' .

val hash : t -> int

hash u associates a non-negative integer to u .

source: 2022-04-09

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