The process of restructuring existing code without changing its external behavior, aimed at improving the code’s structure, readability, and maintainability.
Refactoring is like renovating a house—you’re improving the layout and fixing issues without changing the overall structure or purpose.
A developer refactors a piece of code to remove duplicate logic, making it easier to read and maintain without altering its functionality.
Refactoring helps keep the codebase clean, reduces technical debt, and makes future development faster and less error-prone.
Regular refactoring can extend the life of a codebase, reduce maintenance costs, and improve developer productivity, ultimately leading to higher-quality software.
Refactor regularly rather than letting technical debt accumulate; use automated tests to ensure behavior remains unchanged; focus on one small area of the code at a time.
Refactoring too much at once, leading to errors; not having sufficient tests to verify that the code’s behavior remains unchanged; neglecting to communicate refactoring efforts to the team.
Code complexity reduction, number of code smells removed, test coverage.
SonarQube (code quality analysis), IDEs with refactoring support like IntelliJ IDEA or Visual Studio Code.
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