package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)#(?=item\d)`)
var str = `#333 /*do not track*/
#ff0000 /*do not track*/
#item1 /*found*/
#item2 /*found*/
#item3 /*found*/`
var substitution = "."
fmt.Println(re.ReplaceAllString(str, substitution))
}
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/