什么是Dart中基于Mixin的继承？

Question

This is definition of Mixin Based Programming from the official Docs,

Mixin-based inheritance means that although every class (except for Object) has exactly one superclass, a class body can be reused in multiple class hierarchies.

Can anyone explain this ?

Answer 1

From https://medium.com/flutter-community/dart-what-are-mixins-3a72344011f3

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Answer 2

Mixins are a limited way to reduce the limitations of single-inheritance (in contrary to for example C++ which allows multiple inheritance )

Mixins allow to inherit implementations of methods from one superclass and one or more mixin classes.

See also

• When to use mixins and when to use interfaces in Dart?