Last chance @ The Software Essentialist 🎄 Ends in 1 days.
Well, that's it!
After 2 and a half years, The Software Essentialist, truly the last programming course you'll need, has moved from the Early Adopter Phase to fully complete.
The Software Essentialist is a self-paced transformational course designed to take you from a junior developer to a senior developer in 12 weeks. It has everything you need to get there, including the most important parts of TDD, BDD, DDD, and the various other major topics that you will need to use for the rest of your career, despite the language or framework.
Students have landed jobs, gotten promotions, and even started their own companies 🚀.
If you want to join them, now is the time.
Before July 12th, you can join the course for 40% off. After that, we'll be closing the doors and switching to application only.
Join here before July 12th.
And always, To Mastery!
Responsibility-Driven Design

🌱 This blog post hasn't fully bloomed. It's very likely to change over the next little while.
“Understanding responsibilities is key to good object-oriented design” — Martin Fowler
Do you struggle with object-oriented programming? Does it sometimes feel like it's overly complex for no reason? When you're writing object-oriented code, do you sometimes feel like you're slowly watching it turn into a spaghetti mess? Do you sometimes feel confused as to when you should create new classes? Do you feel like it might be better to just use functions instead?
What if I told you that there's more to building software with objects than just classes, inheritance, polymorphism and encapsulation?
What if I told you that there's a design method - a way of turning requirements into object-oriented designs - that actually
And what if I told you that it was the programming world's most influentual design method (that all the expert object designers are using) that you've likely never heard about.
About Responsibility-Driven Design (RDD)
Allow me to introduce you to Responsibility Driven Design (RDD): the programming world’s most influential, effective, and intentional approach to designing object-oriented software. I know, big claim. But it’s true.
My copy of the legendary Object Design book. My second favourite blue programming book. This book is so rare that it's nearly $200 USD nowadays!
RDD, originally invented by Rebecca Wirfs-Brock in the late 80s and modernized in her 2002 book titled Object Design is a learnable and repeatable design method for building object-oriented applications.
Where most of us today write and think in procedural style code using classes and functions because it's often what the languages dictate, Responsibility-Driven Design presents an approach to actually design objects with purpose and intention.
Roles, responsibilities, collaborations
Object software is neighborhoods of collaborating objects which (polymorphically) come and go, each filling in for roles with related responsibilities.
- Role: A collection of related responsibilities
- Resoponsibility: An obligation to do (some task/behavior) or know something (some data)
- Collaboration: An interaction of objects or roles (or both)
...
To be continued...
Check out the wikipedia page on Responsibility-Driven Design and feel to leave comments or questions for when I finish this post.
Last chance @ The Software Essentialist 🎄 Ends in 1 days.
Well, that's it!
After 2 and a half years, The Software Essentialist, truly the last programming course you'll need, has moved from the Early Adopter Phase to fully complete.
The Software Essentialist is a self-paced transformational course designed to take you from a junior developer to a senior developer in 12 weeks. It has everything you need to get there, including the most important parts of TDD, BDD, DDD, and the various other major topics that you will need to use for the rest of your career, despite the language or framework.
Students have landed jobs, gotten promotions, and even started their own companies 🚀.
If you want to join them, now is the time.
Before July 12th, you can join the course for 40% off. After that, we'll be closing the doors and switching to application only.
Join here before July 12th.
And always, To Mastery!
Stay in touch!
Join 20000+ value-creating Software Essentialists getting actionable advice on how to master what matters each week. đź––
View more in Object-Oriented Design