Software Engineering

Breaking Dependencies to Improve Code

Breaking dependencies is crucial in existing systems to make them more testable, maintainable, and extensible. By reducing coupling and isolating functionality, developers can introduce changes incrementally while minimizing risks. In this course we focus on removing coupling with traits and dependency injection techniques for testability.

Mockito

Scala

ScalaTest

See path

4 lessons

20 practices

3 hours

Course details

Refactoring Tight Coupling with Traits

Preview

Order Processing System in Action

Class Level Fields for Better Performance

Traits for Better Code Design

Previous Course Next Course: Using Seams to Enable Testability and Expand Capabilities

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Francisco Aguilar Meléndez

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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.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

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

Breaking Dependencies to Improve Code

Course details

Unit 13 practices26 min

Unit 26 practices44 min

Unit 36 practices44 min

Unit 45 practices38 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community