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architecture clean-code ddd design design-patterns oop outside-in refactoring solid tdd

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architecture clean-code ddd design design-patterns oop outside-in refactoring solid tdd

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Novice Beginner Proficient Expert

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Short (< 3hs)Medium (< 6hs)Long (> 6hs)

Excellence is not an art.It is the habit of practice.

Learn high-quality software principles and practices by doing code exercises from novice to expert.

Excellence is not an art. It is the habit of practice.

Learn high-quality software principles and practices by doing code exercises from novice to expert.

Latest Katas

Gilded Rose

A famous kata to start your refactoring journey

tdd, clean-code, oop, design, solid, refactoring

Leap Year

Calculate if a year is leap

Ugly Trivia

A trivia game with ugly code ready to be refactored

tdd, clean-code, oop, design, solid, refactoring

Corporate Booking Hotel

Corporate Booking Hotel

Build a corporate hotel booking engine using outside-in TDD

tdd, oop, design-patterns, outside-in, ddd

Mastermind

Recreate the classic Mastermind game using TDD

tdd, clean-code, design, oop, solid, design-patterns, outside-in, ddd, architecture

Poker Hands

Your job is to compare several pairs of poker hands and to indicate which, if either, has a higher rank.

tdd, clean-code, design, oop, solid, design-patterns, outside-in

RPG Combat

A fun RPG game to improve your TDD and design skills

tdd, clean-code, design, oop, solid, design-patterns, outside-in

Yahtzee

Calculate Yahtzee scores

tdd, clean-code, design, oop, solid, design-patterns, outside-in

Zombie Survivor

Zombie Survivor

The zombie apocalypse is here!! Fun game to improve TDD and design skills

tdd, clean-code, design, oop, solid, design-patterns, outside-in, ddd

Bowling

Calculate bowling score

tdd, clean-code