# Hashable
<span class="source-link">[[Source]](src/collections/hashable.md#L-0-5)</span>

Anything with a hash method is hashable.


```pony
interface ref Hashable
```

## Public Functions

### hash
<span class="source-link">[[Source]](src/collections/hashable.md#L-0-9)</span>


```pony
fun box hash()
: USize val
```

#### Returns

* [USize](builtin-USize.md) val

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