iredis/data/commands/sismember.md


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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

```cli
SADD myset "one"
SISMEMBER myset "one"
SISMEMBER myset "two"
```