add type of "int" for sadd

[xxxxxxming]

I want to use int array for the arguments to sadd, then I found that it only supports strings array:

func appendArgs(dst, src []interface{}) []interface{} {	
	if len(src) == 1 {
		if ss, ok := src[0].([]string); ok {
			for _, s := range ss {
				dst = append(dst, s)
			}
			return dst
		}
	}

	for _, v := range src {
		dst = append(dst, v)
	}
	return dst
}

Maybe it could be change somewhere like this?

func appendArgs(dst, src []interface{}) []interface{} {
	if len(src) == 1 {
		if ss, ok := src[0].([]string); ok {
			for _, s := range ss {
				dst = append(dst, s)
			}
			return dst
		}
		// new add
		if ss, ok := src[0].([]int); ok {
			for _, s := range ss {
				dst = append(dst, s)
			}
			return dst
		}
	}

	for _, v := range src {
		dst = append(dst, v)
	}
	return dst
}