[code]
func ArrayPad(s []interface{}, size int, val interface{}) []interface{} {
	if size == 0 || (size > 0 && size < len(s)) || (size < 0 && size > -len(s)) {
		return s
	}
	n := size
	if size < 0 {
		n = -size
	}
	n -= len(s)
	tmp := make([]interface{}, n)
	for i := 0; i < n; i++ {
		tmp[i] = val
	}
	if size > 0 {
		return append(s, tmp...)
	} else {
		return append(tmp, s...)
	}
}
[/code]