Dart 中的构造函数 inheritance

Question

I found the following statement in Dart documentation :

Subclasses don't inherit constructors from their superclass.

What does this mean?

Answer 1

From Docs :

Remember that constructors are not inherited, which means that a superclass's named constructor is not inherited by a subclass. If you want a subclass to be created with a named constructor defined in the superclass, you must implement that constructor in the subclass.