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.

    $ SADD yuga_world "America"

    1

    $ SADD yuga_world "Asia"

    1

    $ SCARD yuga_world

    2

    See also

    sadd, sismember, smembers, srem