#dart-class
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Mixins are a way of defining code that can be reused in multiple class hierarchies. They are intended to provide member implementations en masse. To...
To close the type hierarchy, use the final modifier. This prevents subtyping from a class outside of the current library. Disallowing both inheritance...
To create a known, enumerable set of subtypes, use the sealed modifier. This allows you to create a switch over those subtypes that is statically...
In Dart, a callable class is a class that has a call method defined in it. A call method is a special method that allows you to invoke an instance of...