Code Refactoring

Refactoring is:

• A disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior.

• The application of concepts, techniques and tools for dramatically improving or optimizing software processes.

• The practice of analyzing a software system, either in whole or in part, to extract design and implementation information.

It is important to do medium to big changes in order to get more benefits from refactoring

• True

• False

A good moment for refactoring a code is:

• When the client reports an error in the software and you have to fixed it quickly

• When you are beginning to write a new function in a program

• When you are analyzing a software and discover a bad smell

One example of refactoring is:

• Adding a new validation to a method

• Optimizing a database query

• Moving a responsibility from one class to another

• Obtaining a class diagram from source code

One benefit of refactoring is:

• Improves the software design

• Improves the program performance

"Extract method/function" is a refactoring that consists of:

• Move a method from one class to another

• Move a fragment of code from an existing method into a new method

• Change the parameters list of a method to make it shorter

• Change the name of the method to make it more meaningful