# Hashable64
<span class="source-link">[[Source]](src/collections/hashable.md#L-0-11)</span>

A version of Hashable that returns 64-bit hashes on every platform.


```pony
interface ref Hashable64
```

## Public Functions

### hash64
<span class="source-link">[[Source]](src/collections/hashable.md#L-0-15)</span>


```pony
fun box hash64()
: U64 val
```

#### Returns

* [U64](builtin-U64.md) val

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