# `GSLayer.isUpdatingMetrics`

*Instance Property*

Whether the layer is currently updating its side bearings.

## Declaration

```swift
var isUpdatingMetrics: Bool { get set }
```

```objc
@property BOOL isUpdatingMetrics;
```

```python
isUpdatingMetrics() -> bool
setIsUpdatingMetrics_(isUpdatingMetrics: bool)
```

## See Also

### Update State

- [`GSLayer.lastUpdate`](/Core/GlyphsCore/GSLayer/lastUpdate) — The time of the most recent geometry invalidation.
- [`GSLayer.lastOperation`](/Core/GlyphsCore/GSLayer/lastOperation) — The most recent update affecting the layer or its referenced content.
- [`GSLayer lastOperation:`](/Core/GlyphsCore/GSLayer/lastOperation:) — The most recent update affecting the layer or its referenced content, while avoiding component cycles.
- [`GSLayer.upToDate`](/Core/GlyphsCore/GSLayer/upToDate) — Whether derived representations are newer than changes that affect the layer.
- [`GSLayer.content`](/Core/GlyphsCore/GSLayer/content) — A KVO dependency key for changes to any content of the layer.