It means a class can extend only a single class at a time . Extending more than one class will lead to code execution failure. When a class extends a class, then it is called single inheritance . If a class extends more than one class, it is called multi-inheritance , which is not allowed in Java.
Read moreCan we extend multiple classes in Dart?
Unlike implementing multiple interfaces, Dart only supports single inheritance. So, you can not extend from multiple classes .23 May 2019
Read moreCan you have multiple extends?
You can only Extend a single class. And implement Interfaces from many sources. Extending multiple classes is not available .
Read moreWhat is Mixins in Dart?
Mixins in Dart are a way of using the code of a class again in multiple class hierarchies . We make use of the with keyword followed by one or more mixins names.
Read moreWhy 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
Read moreWhat is difference between extends and implements in Dart?
For example the class car could extend the class vehicle. In Dart a class can only extend one class. Implements: Every class implicitly defines an interface containing all the instance members of the class and of any interfaces it implements .
Read moreHow 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.
Read more