Loading...

Computer Programming

Applying Clean Code Principles

Apply essential clean code principles, such as DRY, KISS, Law of Demeter, and SOLID. This course helps reinforce best practices through practical implementation and real-world examples in Kotlin.

Kotlin

See path

4 lessons

12 practices

2 hours

Computer Science Fundamentals

Lessons and practices

Lesson 1: Applying Clean Code Principles: Embracing DRY in Kotlin

Applying DRY Principle with Function Extraction in Kotlin

Extracting Constants to Apply the DRY Principle

Replace Temp with Query in Kotlin

Lesson 2: Applying the KISS Principle in Kotlin

Simplifying Order Cost Calculation Using KISS Principle

Simplifying Leap Year Calculation

Simplifying String Manipulations: Palindrome Checker

Lesson 3: Applying the Law of Demeter in Kotlin

Improving Object Interactions in a Library System

Refactoring Food Delivery Service to Follow the Law of Demeter

Lesson 4: Applying SOLID Principles in Kotlin

Refactor Course Management System for Single Responsibility

Open/Closed Principle Refactoring Exercise

Refactoring Vehicle Interface Using Interface Segregation Principle

Implementing Dependency Inversion in Kotlin

Meet Cosmo:

The smartest AI guide in the universe

Our built-in AI guide and tutor, Cosmo, prompts you with challenges that are built just for you and unblocks you when you get stuck.

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.