Those are nice. Services that manage data are an example. Having the class also declare how to interact with the data is nice.
My most OOP pattern I like using is implementing an interface with an abstract class for “standard” implementation. Then implement abstract methods for a concrete thing.
Using classes is nice tbh. Using inheritance usually isn’t. Inheriting from inherited class should be forbidden.
so an interface with state?
Those are nice. Services that manage data are an example. Having the class also declare how to interact with the data is nice.
My most OOP pattern I like using is implementing an interface with an abstract class for “standard” implementation. Then implement abstract methods for a concrete thing.