Tag: delegation pattern
-
Delegate and Decorate in Python: Part 3 – Reusable Decorators
Note: This is not about Python’s language feature called decorators (with the @ symbol), but about the design patterns called “decorator” and “delegate.” In the final installment of this series, we will take the universal concepts of delegation and decoration and put them into a base Decorator class. Doing so will allow us to abstract the universal…
-
Delegate and Decorate in Python: Part 2 – The Decorator Pattern
Note: This is not about Python’s language feature called decorators (with the @ symbol), but about the design patterns called “decorator” and “delegate.” In the previous article, we learned how to implement the Delegation pattern in Python. With this knowledge, we’ll now learn about the Decorator pattern, which will make use of delegation. We’ll learn…
-
Delegate and Decorate in Python: Part 1 – The Delegation Pattern
Note: This is not about Python’s language feature called decorators (with the @ symbol), but about the design patterns called “decorator” and “delegate.” In this series we’re going to learn two very useful design patterns: the delegation pattern and the decorator pattern. Each pattern is useful in that they help us enforce the single responsibility…