package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(\S+) (?=(?s:.)*\1.*).*`)
var str = `user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user3 jan/12/12
user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user1 jul/12/12
user6 aug/06/06
user5 jul/13/13
user1 jul/14/12
user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user1 aug/12/12
user5 feb/13/13
user1 dec/14/12
user1 jul/12/12
user5 jul/13/13
user1 jul/14/12
user2 jun/15/14`
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/