Appending elements to slices in Golang

slices_append.go

package main

import "fmt"

func main() {

	var names []string                         /* Zero value of a slice is nil */
	fmt.Println(names, len(names), cap(names)) /* Returns [] 0 0 */
	names = append(names, "John", "Bill", "Steve")
	fmt.Println(names, len(names), cap(names)) /* Returns [John Bill Steve] 3 3 */

	vegies := [...]string{"Potato", "Tomato", "Eggplant", "Onion", "Capsicum"}
	vegslice := vegies[1:3]
	/* Returns [Tomato Eggplant] 2 4 */
	fmt.Println(vegslice, len(vegslice), cap(vegslice))

	vegslice = append(vegslice, "Okra", "Cabbage")
	/* Returns [Tomato Eggplant Okra Cabbage] 4 4 */
	fmt.Println(vegslice, len(vegslice), cap(vegslice))

	vegslice = append(vegslice, "Lettuce", "Bottlegaurd")
	/* Returns [Tomato Eggplant Okra Cabbage Lettuce Bottlegaurd] 6 8 */
	fmt.Println(vegslice, len(vegslice), cap(vegslice))
}