Simple regex submatch function example

findSubmatch.go

func FindSubmatch(text string, regex string, submatch int) (ret string) {
    var r = regexp.MustCompile(regex)
    a := r.FindStringSubmatch(text)
    if len(a) <= submatch {
        ret = ""
        return
    }
    ret = a[submatch]
    ret = strings.TrimSpace(ret)
    return
}