Describe the use of mixins in Dart.

Mixins in Dart provide a way to reuse a class's code in multiple class hierarchies without using traditional inheritance. They allow the sharing of methods and properties among classes without creating a strict hierarchical relationship. Mixins are applied using the 'with' keyword and provide a flexible and modular approach to code reuse. Understanding how to use mixins enhances code organization and promotes the reuse of functionality across different parts of a Dart application.