Code duplication occurs when identical or very similar code appears in multiple places within a codebase, often leading to increased maintenance effort and potential for bugs. Eliminating duplication through refactoring improves code readability, reduces redundancy, and enhances maintainability.

Code Duplication

Code duplication

Identical code

very similar code

A codebase is the complete collection of source code used to build a particular software application or system, encompassing all files, libraries, and dependencies required for its functionality. Effective management of a codebase is crucial for maintaining software quality, facilitating collaboration, and enabling efficient updates and scaling.

codebase

increased maintenance effort

potential for bugs

Eliminating duplication

Refactoring is the process of restructuring existing computer code without changing its external behavior to improve its readability, maintainability, and extensibility. It is a critical practice for managing technical debt and ensuring software systems remain adaptable to future changes and requirements.

refactoring

Code readability refers to how easily a human reader can understand and navigate through the source code of a program. It is crucial for maintaining, debugging, and extending software, as well as for facilitating collaboration among developers.

code readability

reduces redundancy

enhances maintainability

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