---
title: NSLayoutConstraint.Priority
framework: appkit
role: symbol
role_heading: Structure
path: appkit/nslayoutconstraint/priority-swift.struct
---

# NSLayoutConstraint.Priority

Layout priority used to indicate the relative importance of constraints, allowing Auto Layout to make appropriate tradeoffs when satisfying the constraints of the system as a whole.

## Declaration

```swift
struct Priority
```

## Topics

### Constants

- [required](appkit/nslayoutconstraint/priority-swift.struct/required.md)
- [defaultHigh](appkit/nslayoutconstraint/priority-swift.struct/defaulthigh.md)
- [dragThatCanResizeWindow](appkit/nslayoutconstraint/priority-swift.struct/dragthatcanresizewindow.md)
- [windowSizeStayPut](appkit/nslayoutconstraint/priority-swift.struct/windowsizestayput.md)
- [dragThatCannotResizeWindow](appkit/nslayoutconstraint/priority-swift.struct/dragthatcannotresizewindow.md)
- [defaultLow](appkit/nslayoutconstraint/priority-swift.struct/defaultlow.md)
- [fittingSizeCompression](appkit/nslayoutconstraint/priority-swift.struct/fittingsizecompression.md)

### Initializers

- [init(_:)](appkit/nslayoutconstraint/priority-swift.struct/init(_:).md)
- [init(rawValue:)](appkit/nslayoutconstraint/priority-swift.struct/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Comparable](swift/comparable.md)
- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Getting the layout priority

- [priority](appkit/nslayoutconstraint/priority-swift.property.md)