SISMEMBER

Usage:

SISMEMBER key member [ XX ]

Complexity:

O(1)

Since:

1.0.0

ACL Categories:

@fast, @read, @set

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

Reply

One of the following:

• Integer: 0 if the element is not a member of the set, or when the key does not exist.
• Integer: 1 if the element is a member of the set.

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

History

Version	Change
9.2.0	Added the XX option.