Regexp.FindStringIndex in Go

Posted by GoDoc
Public (Editable by Users)

FindStringIndex returns a two-element slice of integers defining the location of the leftmost match in s of the regular expression. The match itself is at s[loc[0]:loc[1]]. A return value of nil indicates no match.

Go
Edit 
package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`ab?`)
	fmt.Println(re.FindStringIndex("tablett"))
	fmt.Println(re.FindStringIndex("foo") == nil)
}