maxRune const #
const maxRune = '\U0010FFFF'
const maxRune = '\U0010FFFF'
const replacementChar = '\uFFFD'
0xd800-0xdc00 encodes the high 10 bits of a pair. 0xdc00-0xe000 encodes the low 10 bits of a pair. the value is those 20 bits plus 0x10000.
const surr1 = 0xd800
const surr2 = 0xdc00
const surr3 = 0xe000
const surrSelf = 0x10000
AppendRune appends the UTF-16 encoding of the Unicode code point r to the end of p and returns the extended buffer. If the rune is not a valid Unicode code point, it appends the encoding of U+FFFD.
func AppendRune(a []uint16, r rune) []uint16
Decode returns the Unicode code point sequence represented by the UTF-16 encoding s.
func Decode(s []uint16) []rune
DecodeRune returns the UTF-16 decoding of a surrogate pair. If the pair is not a valid UTF-16 surrogate pair, DecodeRune returns the Unicode replacement code point U+FFFD.
func DecodeRune(r1 rune, r2 rune) rune
Encode returns the UTF-16 encoding of the Unicode code point sequence s.
func Encode(s []rune) []uint16
EncodeRune returns the UTF-16 surrogate pair r1, r2 for the given rune. If the rune is not a valid Unicode code point or does not need encoding, EncodeRune returns U+FFFD, U+FFFD.
func EncodeRune(r rune) (r1 rune, r2 rune)
IsSurrogate reports whether the specified Unicode code point can appear in a surrogate pair.
func IsSurrogate(r rune) bool
RuneLen returns the number of 16-bit words in the UTF-16 encoding of the rune. It returns -1 if the rune is not a valid value to encode in UTF-16.
func RuneLen(r rune) int
decode appends to buf the Unicode code point sequence represented by the UTF-16 encoding s and return the extended buffer.
func decode(s []uint16, buf []rune) []rune
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