Logic that is identical by mistake or convenience. This is the primary target for refactoring.
A common guideline to avoid premature abstraction is the : First time: Just solve the problem. Second time: Tolerate the duplication (copy-paste). duplication
Understanding the intent behind the repetition helps determine if it needs fixing. Logic that is identical by mistake or convenience
What Is Code Duplication? Best Tools to Detect & Fix It in 2026 Second time: Tolerate the duplication (copy-paste)
Once you see a definitive pattern, refactor it into a shared function or class. 3. How to Fix Duplication
In software development, occurs when the same logic or data is repeated across multiple parts of a codebase . While often viewed as a "code smell" that increases technical debt, strategic duplication can sometimes be better than a poorly designed abstraction. 1. Types of Duplication