// when one of the low:high indices are omitted,
// it defaults to 0:length.

package main

import "fmt"

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

    a = a[1:4]
    fmt.Println(a)

    a = a[:5]
    fmt.Println(a)

    a = a[:]
    fmt.Println(a)
}