package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?i)(?:(?<= [+][1-9])|(?<= [1-9])|(?<= ))([2-9][0-9]{9})\b`)
var str = `abcd +12125551212 xyz should match starting at 212
abcd +2125551212 xyz should NOT match (+ sign only)
abcd 2125551212 xyz match OK!
abcd+12125551212 xyz should NOT match (no white space at start)
abcd 12125551212 xyz should match starting at 212
`
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/