chunk-slice

func ChunkingSlice(list interface{}, size int) []interface{} {
	if size <= 0 {
		return []interface{}{}
	}

	// sliceかどうかのチェック
	if reflect.TypeOf(list).Kind() != reflect.Slice {
		return []interface{}{}
	}

	var result = []interface{}{}

	var v = reflect.ValueOf(list)
	for i := 0; i < v.Len(); i += size {
		if i+size <= v.Len() {
			result = append(result, v.Slice(i, i+size).Interface())
		} else {
			result = append(result, v.Slice(i, v.Len()).Interface())
		}
	}

	return result
}