---
title: selector
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nssortdescriptor/selector
---

# selector

The selector for comparing objects.

## Declaration

```swift
var selector: Selector? { get }
```

## See Also

### Getting Information About a Sort Descriptor

- [ascending](foundation/nssortdescriptor/ascending.md)
- [key](foundation/nssortdescriptor/key.md)
- [keyPath](foundation/nssortdescriptor/keypath.md)
- [comparator](foundation/nssortdescriptor/comparator.md)