SCARD

Synopsis

SCARD key
This command finds the cardinality of the set that is associated with the given key. Cardinality is the number of elements in a set.

If the `key` does not exist, 0 is returned.

If the `key` is associated with a non-set value, an error is raised.

Return value

Returns the cardinality of the set.

Examples

You can do this as shown below.

1

1

2

See also

sadd, sismember, smembers, srem