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CodeSignal via edX

Refactoring Techniques in C++

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Overview

This course path teaches developers to enhance challenging codebases with safe, incremental changes. It covers dependency breaking, refactoring, and characterization testing to modernize existing systems while maintaining functionality.

What you'll learn

  • Apply sprout and wrap techniques to introduce changes safely
  • Identify functional, object, and preprocessor seams in C++ code
  • Break tightly coupled dependencies using interfaces and dependency injection
  • Refactor existing systems incrementally while preserving behavior
  • Create characterization tests that document current functionality
  • Increase test coverage to support safer code changes
  • Improve the maintainability, testability, and extensibility of C++ codebases

Skills you'll practise

C++ (Programming Language)Code CoverageDependency Injection

Advantages and disadvantages

Advantages

  • University courses you can audit for free, with lectures, readings and practice quizzes.
  • A verified certificate from the university if you pay for it.
  • Self-paced: start any time.

Disadvantages

  • Graded assignments and the certificate need the paid track.
  • Audit access can expire a few weeks after the course ends.
  • Learning is free, but the certificate costs money.
  • Some parts (graded work, certificate) are paid.

Some points apply to every course of this kind; see how we rank.

Free to audit

  • Free: Choose "Audit this course" when you enrol: lectures, readings and practice are free.
  • Paid: Graded assignments and the verified certificate (Certificate $75). Audit access may end after the course closes.

Before you start

Intermediate: Computer Systems and Architecture (C++, GoogleTest, Moq) Intermediate: Software Development Practices (C++, GoogleTest, Moq)

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