lastIndex := re.SubexpIndex("last")
	fmt.Printf("last => %d\n", lastIndex)
	fmt.Println(matches[lastIndex])
	// Output:
	// true
	// last => 2
	// Turing
}

func ExampleRegexp_Split() {
	a := regexp.MustCompile(`a`)
	fmt.Println(a.Split("banana", -1))
	fmt.Println(a.Split("banana", 0))
	fmt.Println(a.Split("banana", 1))
	fmt.Println(a.Split("banana", 2))
	zp := regexp.MustCompile(`z+`)