---
title: key
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsdictionarycontrollerkeyvaluepair/key
---

# key

## Declaration

```swift
var key: String? { get set }
```

## See Also

### Instance Properties

- [isExplicitlyIncluded](appkit/nsdictionarycontrollerkeyvaluepair/isexplicitlyincluded.md)
- [localizedKey](appkit/nsdictionarycontrollerkeyvaluepair/localizedkey.md)
- [value](appkit/nsdictionarycontrollerkeyvaluepair/value.md)