Tag: software design
-
Test-Driven Development with Python: a Primer
Making sure the software we build works the way we (and our customers) want it to work is called, unsurprisingly, software testing. Software testing is an enormous topic; indeed, there are entire books, courses, conferences, academic journals, and more about the topic. One can even make a career out of testing software. We couldn’t possibly…
-
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…
-
Designing Public Interfaces the Right Way
Interfaces define the ways objects interact with each other. Properly designing interfaces not only help conceptualize a system, but aid in testing and maintainability of our systems.