SISMEMBER key member

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

redis> SADD myset "one"
TBD
redis> SISMEMBER myset "one"
TBD
redis> SISMEMBER myset "two"