---
title: UIFontDescriptor.FeatureKey
framework: uikit
role: symbol
role_heading: Structure
path: uikit/uifontdescriptor/featurekey
---

# UIFontDescriptor.FeatureKey

Keys for retrieving feature settings.

## Declaration

```swift
struct FeatureKey
```

## Overview

Overview Use these keys when retrieving information from one of the dictionaries associated with the featureSettings key.

## Topics

### Keys

- [type](uikit/uifontdescriptor/featurekey/type.md)
- [selector](uikit/uifontdescriptor/featurekey/selector.md)

### Initializers

- [init(_:)](uikit/uifontdescriptor/featurekey/init(_:).md)
- [init(rawValue:)](uikit/uifontdescriptor/featurekey/init(rawvalue:).md)

### Deprecated

- [featureIdentifier](uikit/uifontdescriptor/featurekey/featureidentifier.md)
- [typeIdentifier](uikit/uifontdescriptor/featurekey/typeidentifier.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Constants

- [UIFont.TextStyle](uikit/uifont/textstyle.md)
- [UIFontDescriptor.SystemDesign](uikit/uifontdescriptor/systemdesign.md)
- [UIFontDescriptor.SymbolicTraits](uikit/uifontdescriptor/symbolictraits-swift.struct.md)
- [UIFontDescriptor.Class](uikit/uifontdescriptor/class.md)
- [UIFontDescriptor.AttributeName](uikit/uifontdescriptor/attributename.md)
- [UIFontDescriptor.TraitKey](uikit/uifontdescriptor/traitkey.md)
- [UIFont.Weight](uikit/uifont/weight.md)
- [UIFont.Width](uikit/uifont/width.md)