Insert List at Index in Go

package main

import (
	"fmt"
)

func main() {
	s := []int{1, 2, 3, 4, 5}
	s2 := []int{6, 7, 8, 9, 10}

	insertIdx := 3
	s = append(s[:insertIdx], append(s2, s[insertIdx:]...)...)
	fmt.Println(s)
}