type t
The type for Unicode characters.
A value of this type represents a Unicode scalar value which is an integer in the ranges
0x0000
...0xD7FF
or0xE000
...0x10FFFF
.
val min : t
min
is U+0000.
val max : t
max
is U+10FFFF.
val bom : t
bom
is U+FEFF, the byte order mark (BOM) character.- since
- 4.06.0
val rep : t
rep
is U+FFFD, the replacement character.- since
- 4.06.0
val succ : t -> t
succ u
is the scalar value afteru
in the set of Unicode scalar values.- raises Invalid_argument
if
u
ismax
.
val pred : t -> t
pred u
is the scalar value beforeu
in the set of Unicode scalar values.- raises Invalid_argument
if
u
ismin
.
val is_valid : int -> bool
is_valid n
istrue
iffn
is a Unicode scalar value (i.e. in the ranges0x0000
...0xD7FF
or0xE000
...0x10FFFF
).
val of_int : int -> t
of_int i
isi
as a Unicode character.- raises Invalid_argument
if
i
does not satisfyis_valid
.
val to_int : t -> int
to_int u
isu
as an integer.
val is_char : t -> bool
is_char u
istrue
iffu
is a latin1 OCaml character.
val of_char : char -> t
of_char c
isc
as a Unicode character.
val to_char : t -> char
to_char u
isu
as an OCaml latin1 character.- raises Invalid_argument
if
u
does not satisfyis_char
.
val hash : t -> int
hash u
associates a non-negative integer tou
.