Redis
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sismember

SISMEMBER

SISMEMBER key member

Available since 1.0.0.

Time complexity: O(1)

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

Return value

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" (integer) 1 redis> SISMEMBER myset "one" (integer) 1 登录查看完整内容