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, long...@gmail.com 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! > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.