# _Map
<span class="source-link">[[Source]](src/collections-persistent/_test.md#L339)</span>
```pony
type _Map is
  HashMap[U64 val, U64 val, CollisionHash val] val
```

#### Type Alias For

* [HashMap](collections-persistent-HashMap.md)\[[U64](builtin-U64.md) val, [U64](builtin-U64.md) val, [CollisionHash](collections-persistent-CollisionHash.md) val\] val

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