Why we use mixin in Dart?

Mixins are useful when you need code sharing without using inheritance . When you use class B with A {} you are importing every method of mixin A into your class B . Optionally, the usage of a mixin can be constrained to a certain type using the on keyword.15 Haz 2021

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How do you extend a class Dart?

You can do this by using inheritance . Inheritance allows you to take an existing type, such as a User , and add more functionality to it by subclassing using the extends keyword. When inheriting a class, you can also specify new behavior for existing methods and properties by overriding them.

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