SISMEMBER

Syntax

1. SISMEMBER key member

Time complexity: O(1)

ACL categories: @read, @set, @fast

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

Return

Integer reply, specifically:

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

Examples

1. dragonfly> SADD myset "one"
2. (integer) 1
3. dragonfly> SISMEMBER myset "one"
4. (integer) 1
5. dragonfly> SISMEMBER myset "two"
6. (integer) 0