Method SCARD

sets.go:62–64

SCARD returns the cardinality (the number of elements) in the set at key. Cost is O(size) / 1 WCU per 4KB of data counted. Works similar to https://redis.io/commands/scard

(key string)

//
// Works similar to https://redis.io/commands/scard
func (c Client) SCARD(key string) (count int64, err error) {
	return c.HLEN(key)
}

func (c Client) SDIFF(key string, subtractKeys ...string) (members []string, err error) {
	memberSet := make(map[string]struct{})