An interface defines the syntax that any entity must add here to. Interfaces define a set of methods available on an object. Dart does not have a syntax for declaring interfaces .
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If you want to create a class A that supports class B’s API without inheriting B’s implementation, class A should implement the B interface. In Dart, every class defines an implicit interface as others say. So then… the key is: Classes should use the implements keyword to be able to use an interface.7 Mar 2021
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