package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^((25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)(?:\/([0-9]|[1-2][0-9]|3[0-2]))?$`)
var str = ``
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/