How do you define an interface in darts?

Dart has no interface keyword. Instead, all classes implicitly define an interface . Therefore, you can implement any class.

Dart does not have a syntax for declaring interfaces . Class declarations are themselves interfaces in Dart. Classes should use the implements keyword to be able to use an interface. It is mandatory for the implementing class to provide a concrete implementation of all the functions of the implemented interface.

Yes, you can define a class inside an interface . In general, if the methods of the interface use this class and if we are not using it anywhere else we will declare a class within an interface.

An interface is declared by using the interface keyword . It provides total abstraction; means all the methods in an interface are declared with the empty body, and all the fields are public, static and final by default. A class that implements an interface must implement all the methods declared in the interface.

An interface is declared by using the interface keyword . It provides total abstraction; means all the methods in an interface are declared with the empty body, and all the fields are public, static and final by default. A class that implements an interface must implement all the methods declared in the interface.

Dart does not have a syntax for declaring interfaces . Class declarations are themselves interfaces in Dart. Classes should use the implements keyword to be able to use an interface. It is mandatory for the implementing class to provide a concrete implementation of all the functions of the implemented interface.