reverse.go

func reverse(slice interface{}) interface{} {
	// Completely inefficient but syntactically "convenient"
	s := reflect.ValueOf(slice)
	switch s.Kind() {
	case reflect.String:
		// Support proper rune stuff, but terribly
		ret := ""
		for _, v := range slice.(string) {
			ret = string(v) + ret
		}
		return ret
	case reflect.Slice, reflect.Array:
		ret := reflect.MakeSlice(reflect.TypeOf(slice), s.Len(), s.Len())
		for i := 0; i < s.Len(); i++ {
			ret.Index(s.Len() - 1 - i).Set(s.Index(i))
		}
		return ret.Interface()
	}

	panic("Invalid type for reverse()")
}

reverse a slice