package main

import "fmt"

func printSlice(s []int) {
	fmt.Printf("len=%d cap=%d %v\n", len(s), cap(s), s)
}

func main() {
	s := []int{2, 3, 5, 7, 11, 13}
	printSlice(s)

	s = s[:0]
	printSlice(s)

	s = s[:4]
	printSlice(s)

	s = s[2:]
	printSlice(s)

	// Extend beyond capacity
	// s = s[:10]
	// printSlice(s)

	// Zero value of a slice is nil
	var ns []int
	printSlice(ns)

	if ns == nil {
		fmt.Println("nil!!")
	}
}