Refactoring

Today I came across a very interesting guide. More precisely, a site dedicated to refactoring. I advise you to read :) So, briefly what it is about: refactoring is a controlled process of improving your code, without writing new functionality. Refactoring challenge: reduce technical debt. Refactoring goal: clean code and simple design. Clean code = Simple code

• Clean code passes all tests.
• Clean code is obvious to other programmers.
• Clean code contains no duplication.
• Clean code contains a minimum of classes and other moving parts.
• Clean code is easier and cheaper to maintain.

How is the refactoring going? Refactoring should be done as a series of small changes, each one making the existing code slightly better while leaving the program running. Checklist of correctly performed refactoring:

• The refactoring process does not create new functionality.
• After the refactoring, all existing tests should pass successfully.
• After refactoring, the code should become cleaner.

More details, with beautifully designed examples - at the link .