package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?xm)^\d{1,3}(?:(?:(?=([\ _.,]?))(?:\1\d{3})*))$`)
var str = `1
12
123
123.456.789.884
12.55
12.345
2,234,647
2,234_754
2 234 723
123456
1
12
123
1234
12345
123456
1234567
123.456789`
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/