Refactoring

Refactoring consists of improving the internal structure of an existing program’s source code, while preserving its external behaviour. 

 Refactoring does “not” mean: 

 - rewriting code 

- fixing bugs 

- improve observable aspects of software such as its interface

 Refactoring Benefits :

- Clean Code 

- No Duplication 

- No Technical Failures 

- Easy code maintenance 

- Easier to Manage and many more .... 

 When to Refactor Code: 

 - Sometimes , due to less time frame refactoring is not considered or given importance. In this case, after code accumulation, lots of Technical failures persists.In this case you can refactor your code. 

- During code reviews. 

- Passive refactoring will be fine too (during bug fixing, during development etc...,) 

- Most of the cases, detecting code smells and writing cleaner code will never account for a specific time for refactoring. 

 Some Refactoring Techniques:  

 - SOLID 

 - KISS(Keep It Simple, Stupid) 

 - DRY 

 - YAGNI 

 - Red Green Refactoring