US Social Security Number

const re = new RegExp("\\b\\d{3}-\\d{2}-\\d{4}\\b", "g");
const input = "123-45-6789";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

import re

pattern = re.compile(r"\b\d{3}-\d{2}-\d{4}\b")
input_text = "123-45-6789"
for m in pattern.finditer(input_text):
    print(m.group(0))

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`\b\d{3}-\d{2}-\d{4}\b`)
	input := `123-45-6789`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}