# `GSLayer indexOfObjectInGuides:`

*Instance Method*

The index of a guide in the layer.

## Declaration

```objc
- (NSUInteger) indexOfObjectInGuides:(GSGuide *) guide;
```

```python
indexOfObjectInGuides_(guide: GSGuide) -> int
```

## Return Value

The guide index, or `NSNotFound` if the guide is not in the layer.

## See Also

### Guides

- [`GSLayer.guides`](/Core/GlyphsCore/GSLayer/guides) — Layer-local guides.
- [`GSLayer countOfGuides`](/Core/GlyphsCore/GSLayer/countOfGuides) — The number of layer-local guides.
- [`GSLayer objectInGuidesAtIndex:`](/Core/GlyphsCore/GSLayer/objectInGuidesAtIndex:) — The guide at an index.
- [`GSLayer addGuide:`](/Core/GlyphsCore/GSLayer/addGuide:) — Adds a guide.
- [`GSLayer insertObject:inGuidesAtIndex:`](/Core/GlyphsCore/GSLayer/insertObject:inGuidesAtIndex:) — Inserts a guide at an index.
- [`GSLayer removeObjectFromGuides:`](/Core/GlyphsCore/GSLayer/removeObjectFromGuides:) — Removes a guide.
- [`GSLayer removeObjectFromGuidesAtIndex:`](/Core/GlyphsCore/GSLayer/removeObjectFromGuidesAtIndex:) — Removes the guide at an index.