可以使用正则表达式和strings包中的方法来实现:
package main
import (
"fmt"
"regexp"
"strings"
)
func main() {
str := "hello world go lang"
re := regexp.MustCompile(`\s([^\s]*)$`)
matched := re.FindStringSubmatch(str)
if len(matched) > 1 {
replaced := strings.Replace(str, matched[1], "-", 1)
fmt.Println(replaced)
}
}
输出为:
hello world go-lang
解释:
\s([^\s]*)$
FindStringSubmatch
Replace-