package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^https?:\/\/regex101\.com\/?(?:r\/(?P<link>(?:[a-zA-Z]{2}\d){2})(?:\/(?P<version>\d+)?)?)?$`)
var str = `http://regex101.com
http://regex101.com/
http://regex101.com/r
http://regex101.com/r/
http://regex101.com/r/FakeFakeFake
http://regex101.com/r/wY0rM7
http://regex101.com/r/wY0rM7/
http://regex101.com/r/wY0rM7/1
http://regex101.com/r/wY0rM7/11
`
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/