blah.go

package main

import "fmt"

func check_slice(x []int) {
	if x != nil && len(x) != 0 {
		fmt.Println(len(x))
	}
}

func main() {
	var s []int

	a := [5]int{1, 2, 3, 4, 5}

	s = a[2:4]
	check_slice(s)
}