package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)(?<![#\d{])\d+(?!\w*(?:}|(?:st|th|rd|nd)\b))`)
var str = `123abd //should match 123
abc345 //should match 234
ab2123cd // should match 2123
{2}: Should NOT Match. //My regex Works
{34: Should NOT Match. //My regex matches 4 in {34
45}: Should NOT Match. //My regex matches 4 in {45
{123}: Should NOT Match. //My regex matches 2 in {123}
1st should NOT match
3th should NOT match, since it's wrong anyway
1nd should NOT match, since it's wrong anyway
14th //should NOT Match
14 th should Match
like 1st, 2nd, etc or #1, #2, etc`
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/