package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(0|[1-9]\d*)(\.(0|[1-9]\d*)){0,3}$`)
var str = `Test:
1.0.2
Test:
1.0.3
Test:
10.11
Test:
011
Test:
1.011
The valid numbers are
1
1.23
1.2.53.4
Invalid numbers are
01
1.02.3
.1.2
1.2.
-1`
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/