Refactoring Strategies: Improving Code Without Breaking It

Refactoring improves code structure without changing behavior. This guide covers techniques for safe, effective refactoring.

When to Refactor#

Rule of Three#

Before Adding Features#

Safe Refactoring Process#

1. Ensure Test Coverage#

2. Small, Incremental Changes#

3. Run Tests After Each Change#

Common Refactoring Patterns#

Extract Method#

Replace Conditional with Polymorphism#

Introduce Parameter Object#

Replace Magic Numbers with Constants#

Decompose Conditional#

IDE Refactoring Tools#

When NOT to Refactor#

Conclusion#

Refactoring is a skill that improves with practice. Always have tests before refactoring, make small changes, and run tests frequently. Good refactoring makes future changes easier and code more enjoyable to work with.