---
title: "currentCompositeKeyHashCode"
description: "A higher-precision variation of [currentCompositeKeyHash] used to map externally stored state to
the composition. By stepping up to a Long, this variation of the key hash is exponentially less
likely to experience a collision.

In practice, because the hash is not perfectly distributed and because there are situations where
the runtime can't uniquely identify certain repeated content, collisions are still possible. This
higher precision does, however, afford more confidence in the assumption that an arbitrarily
sized composition hierarchy will not experience two unrelated groups having the same key hash."
type: "property"
---

<div class='type'>Property</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>


```kotlin
public val currentCompositeKeyHashCode: CompositeKeyHashCode
```


A higher-precision variation of `currentCompositeKeyHash` used to map externally stored state to
the composition. By stepping up to a Long, this variation of the key hash is exponentially less
likely to experience a collision.

In practice, because the hash is not perfectly distributed and because there are situations where
the runtime can't uniquely identify certain repeated content, collisions are still possible. This
higher precision does, however, afford more confidence in the assumption that an arbitrarily
sized composition hierarchy will not experience two unrelated groups having the same key hash.