package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?P<dup>(\w+\s+))(?P=dup)`)
var str = `#命名表达式，并反向引用。比如查找重词
1 hello hello
2 hello world
3 妮妮好
4 你 你
5 wo wo
`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/