Design Patterns

Refactor code with patterns

Learn when common design patterns solve real code pain, and when they add noise. You will refactor a small app and publish a repo recruiters can inspect.

For college builders who can code and want internship-ready proof of clean design choices.

Advanced8 lessonsAbout 38 min+100 XP

Usually easier after OOP. You can start here anyway.

Start lesson 1

Your path

1Start hereSpot pattern-shaped problems5 min
2Create objects with factories5 min
3Swap behavior with strategy5 min
4React to events with observer4 min
5Use singleton with caution4 min
6Bridge boundaries with adapter and repository5 min
7Wire code using dependency injection5 min
8Ship your pattern refactor repo5 min
The check10 questions · 7 to pass
Verify the Design Patterns skill+100 XP and a proof page, once the check and the task are done