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 interfaces and dependency injection techniques for testability.

C++

GoogleTest

See path

4 lessons

22 practices

3 hours

Course details

Breaking Dependencies to Improve Code in C++

Preview

Understanding and Reviewing the Order Processing System

Improving Object Management in OrderProcessor

Creating Interfaces for Database and Payment Dependencies

Refactoring OrderProcessor to Use Interfaces

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

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Francisco Aguilar Meléndez

Data Scientist

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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 14 practices32 min

Unit 26 practices44 min

Unit 36 practices44 min

Unit 46 practices44 min

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From our community