iredis/iredis/data/commands/sismember.md

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

SADD myset "one"
SISMEMBER myset "one"
SISMEMBER myset "two"