package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?<!\d)(?:(?:[01]?\d\d?|2[0-4]\d|25[0-5])\.){3}(?:[01]?\d\d?|2[0-4]\d|25[0-5])(?!\d)`)
var str = `012.33.4.5
12.34.45.67
120.20.23.56
1.2.3.123`
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/