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# DynamicProperty

An interface for a stored variable that updates an external property of a
view.

```
protocol DynamicProperty
```

## Overview

The view gives values to these properties prior to recomputing the view’s
[`body`](/documentation/SwiftUI/View/body-8kl5o).

## Topics

### Updating the value

[`update()`](/documentation/SwiftUI/DynamicProperty/update())

Updates the underlying value of the stored value.


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