# `Foundation.NSMutableDictionary`

*Extended Class*

## Declaration

```swift
extension NSMutableDictionary
```

## Topics

### Instance Methods

- [`NSMutableDictionary object(forKey:defaultClass:)`](/Core/GlyphsCore/Foundation/NSMutableDictionary/object(forKey:defaultClass:))
- [`NSMutableDictionary object(forKey:defaultClass:lock:)`](/Core/GlyphsCore/Foundation/NSMutableDictionary/object(forKey:defaultClass:lock:))
- [`NSMutableDictionary setObject(_:forKeysIn:)`](/Core/GlyphsCore/Foundation/NSMutableDictionary/setObject(_:forKeysIn:))