package unicode/utf16
Golang unicode/utf16.DecodeRune() function usage example.
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.
package main
import (
"fmt"
"unicode/utf16"
)
func main() {
valid_pair := utf16.DecodeRune(0xd800, 0xdc00)
fmt.Printf("%x \n", valid_pair)
not_valid_pair := utf16.DecodeRune('\u6C34', '水')
fmt.Printf("%x \n", not_valid_pair)
not_valid_pair = utf16.DecodeRune(0xd800, '爱')
fmt.Printf("%x \n", not_valid_pair)
}
Sample output :
10000
fffd
fffd
Reference :
https://golang.org/pkg/unicode/utf16/#DecodeRune
