# SetIs\[A: [Any](builtin-Any.md) #share\]
<span class="source-link">[[Source]](src/collections-persistent/set.md#L5)</span>
```pony
type SetIs[A: Any #share] is
  HashSet[A, HashIs[A] val] val
```

#### Type Alias For

* [HashSet](collections-persistent-HashSet.md)\[A, [HashIs](collections-HashIs.md)\[A\] val\] val

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