import "fmt"

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

    // Slice the slice to give it zero length.
    s := a[:0]
    printSlice(s)

    // Extend its length.
    s = a[1:4]
    printSlice(s)
    // Extend its length.
    s = s[0:5]
    printSlice(s)


    // Drop its first two values.
    s = a[2:]
    printSlice(s)

    s = append(s, 35)
    printSlice(s)
    printSlice(a)
}


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