f9/sdk/dart/package-fuchsia_inspect_inspect/BoolProperty/valid.md

# valid property




    *[<Null safety>](https://dart.dev/null-safety)*




bool valid
  
_<span class="feature inherited">inherited</span>_



<p>Returns true only if this <code>Property</code> is present in underlying storage.</p>



## Implementation

```dart
bool get valid => _writer != null;
```