What Is Code Duplication? Best Tools to Detect & Fix It in 2026
Understanding the intent behind the repetition helps determine if it needs fixing.
Two pieces of code look the same now but represent different business concepts that will eventually diverge. 2. The "Rule of Three" Strategy
A common guideline to avoid premature abstraction is the : First time: Just solve the problem. Second time: Tolerate the duplication (copy-paste).
Logic that is identical by mistake or convenience. This is the primary target for refactoring.