Context Managers and Cross Cutting concerns in Python

Hello, In this short article I would like to talk about context managers. I personally consider that at the core they are just a form of decorators. If you don't know what a decorator is check the Decorator Pattern Wikipedia article. Decorators can be used to implement cross-cutting concerns. We have componentA and we need … Continue reading Context Managers and Cross Cutting concerns in Python

Method Injection and Property Injection Design Patterns

Hello, In this article we're going to explore the Method Injection and Property Injection design patterns. To demonstrate the patterns I'm going to add a new interface named Encoder to the printer.py file and a concrete implementation for two encoders: Rot13Encoder and NullEncoder. class Encoder(metaclass=abc.ABCMeta): def encode(self, message: Message) -> Message: raise NotImplementedError("encode must be … Continue reading Method Injection and Property Injection Design Patterns