import (
"fmt"
"slices"
)
var numbers = []int{2, 3, 5, 7, 11, 13, 17}
var contain5 = slices.Contains(numbers, 5)
//contain5 is true
var index5 = slices.Index(numbers, 5)
//index5 is 2
var contain10 = slices.Contains(numbers, 10)
//contain10 is false
fmt.Println("contain5 is", contain5)
fmt.Println("index5 is", index5)
fmt.Println("contain10 is", contain10)