[Go] Extending a slice (from 5 to 8).

package main

import (
    "log"
)

func main() {
    slice := []int{1, 2, 3, 4, 5}

    if !(len(slice) == 5) {
        log.Fatal("Wrong length")
    }

    slice = append(slice, 6, 7, 8)

    if !(len(slice) == 8) {
        log.Fatal("Wrong length")
    }
}