SISMEMBER

Usage:
SISMEMBER key member
Complexity:
O(1)
Since:
1.0.0

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

Examples

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