Refactoring Safely: A Step-by-Step Guide
Refactoring is like renovating a house: you want to improve the structure without breaking the plumbing. Done carelessly, it can introduce bugs and chaos. Done methodically, it makes your code cleaner and more maintainable. Here's how I approach refactoring safely, step by step.
1. Understand the Current Behavior
Before touching anything, I need to know what the code is supposed to do. I read the relevant tests, documentation, and comments. If there are no tests, I write them first. This might seem like extra work, but it's the safety net that lets me refactor with confidence.
// Example: a function that needs refactoring
