sismember.3valkey - Man Page

SISMEMBER key member

Returns if member is a member of the set stored at key.

One of the following:

• valkey-protocol(7) Integer reply: 0 if the element is not a member of the set, or when the key does not exist.
• valkey-protocol(7) Integer reply: 1 if the element is a member of the set.

O(1)

@fast @read @set

• Available since: 1.0.0

127.0.0.1:6379> SADD myset "one"
(integer) 1
127.0.0.1:6379> SISMEMBER myset "one"
(integer) 1
127.0.0.1:6379> SISMEMBER myset "two"
(integer) 0

sadd(3valkey), scard(3valkey), sdiff(3valkey), sdiffstore(3valkey), sinter(3valkey), sintercard(3valkey), sinterstore(3valkey), smembers(3valkey), smismember(3valkey), smove(3valkey), spop(3valkey), srandmember(3valkey), srem(3valkey), sscan(3valkey), sunion(3valkey), sunionstore(3valkey)