---
title: "EmptyCompositeKeyHashCode"
description: "An empty [CompositeKeyHashCode], equivalent to hashing no content. This is not necessarily the
same as the hash at the root of a composition. This is an effective default value in the absence
of a hash from [currentCompositeKeyHashCode]."
type: "property"
---

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


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

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


```kotlin
public expect val EmptyCompositeKeyHashCode: CompositeKeyHashCode
```


An empty `CompositeKeyHashCode`, equivalent to hashing no content. This is not necessarily the
same as the hash at the root of a composition. This is an effective default value in the absence
of a hash from `currentCompositeKeyHashCode`.



<div class='sourceset sourceset-jvmAndAndroid'>JvmAndAndroid</div>


```kotlin
public actual const val EmptyCompositeKeyHashCode: Long
```


<div class='sourceset sourceset-nonJvm'>NonJvm</div>


```kotlin
public actual const val EmptyCompositeKeyHashCode: Long
```