I find the method like:
package main
import (
"fmt"
"strings"
"unicode/utf8"
)
func main() {
var str = "a/b/汉字/d/汉字"
var _, size = utf8.DecodeLastRuneInString(str)
// Does `str[0:len(str)-size]` have memory copy?
var i = strings.LastIndex(str[0:len(str)-size], "/汉字")
fmt.Println(i)
}
But I don't know if str[0:len(str)-size] if copy the string? If the code
will copy the string, I will covert the string to []byte first. Because I
need several times check for the str.
Where I can find some article about that(str copy)?
On Friday, May 26, 2017 at 10:45:09 PM UTC+8, [email protected] wrote:
>
> var str = "a/b/c/d/c"
> // I want remove last chracter from str
> var strRunes = []rune(str)
> var newStrRunes = strRunes[0 : len(strRunes)-1]
> // then I want get last index of chracters `/c`, I need
> convert to string back!???
> strings.LastIndex(string(newStrRunes), "/c")
> // Does there have a method that LastIndex(rs []rune, s
> string)
>
> Thanks for your help!
>
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