---
title: "ReusableComposition"
description: "A [ReusableComposition] is a [Composition] that can be reused for different composable content.

This interface is used by components that have to synchronize lifecycle of parent and child
compositions and efficiently reuse the nodes emitted by [ReusableComposeNode]."
type: "interface"
---

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


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

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



```kotlin
public sealed interface ReusableComposition : Composition
```


A `ReusableComposition` is a `Composition` that can be reused for different composable content.

This interface is used by components that have to synchronize lifecycle of parent and child
compositions and efficiently reuse the nodes emitted by `ReusableComposeNode`.


## Functions

```kotlin
public fun setContentWithReuse(content: @Composable () -> Unit)
```


Update the composition with the content described by the `content` composable. After this has
been called the changes to produce the initial composition has been calculated and applied to
the composition.

This method forces this composition into "reusing" state before setting content. In reusing
state, all remembered content is discarded, and nodes emitted by `ReusableComposeNode` are
re-used for the new content. The nodes are only reused if the group structure containing the
node matches new content.

Will throw an `IllegalStateException` if the composition has been disposed.

#### Parameters

| | |
| --- | --- |
| content | A composable function that describes the content of the composition. |



```kotlin
public fun deactivate()
```


Deactivate all observation scopes in composition and remove all remembered slots while
preserving nodes in place. The composition can be re-activated by calling `setContent` with a
new content.