Refactoring

Refactoring is a way of changing a software system in which it does not alter the external behavior of the code but improves its internal structure. It can be used to clean up the code and minimize the possibility of introducing bugs. The essence of refactoring is to improve the design of the code after it has been written.

You can use the bad design and work over it by refactoring into a well-designed code. Each step tends to be simple. You can also find the balance of work changes since the occurrence happens continuously during the development. The interaction outcomes lead to a program with good design that stays along the way with the development.

Refactoring can be known as cleaning up code with a more controlled and efficient technique. There are a couple of points in terms of refactoring. First, refactoring is used to make the software easier to understand and modify. Changes can be done in software’s observable behavior, and refactoring is the only way to make the changes easier to understand. Performance optimization also works like refactoring, but it has a different purpose. It often makes the code harder to understand, but you still need to do it to get the performance you need.

The second thing to highlight is that refactoring doesn’t change the observable behavior of the software. The software can still function as it did before. Whether the end-user or the programmer, any user will not tell the difference between before and after refactoring.

As people change code, the structure of the code will also lose. It becomes harder to see the design by reading the code. The harder it is to see the design, the more challenging it is to preserve it, and the more rapidly it decays. To solve that, refactoring can be used to tidy up the code.

Programming is a way to communicate with a computer by writing a code that tells the computer what to do, and the computer will respond by doing what you ask it to do. There is a problem when you are trying to make the program work, and it’s that you are not thinking about the future developers who will read your code. In this case, you can use refactoring to make your code more readable. The first time you use refactoring, you will find a code that is worked but is not ideally structured. Then, spent a little more time in refactoring to make your code better in communicating its purpose. It also works both ways since refactoring can help you understand unfamiliar code.

Helping you in understanding the code also helps to spot the bugs. Some people can read a mass of code and find bugs, but some don’t. Thus, refactoring will help you find bugs and make a strong code.

All the descriptions above lead you to faster programming. Refactoring will help you to develop code more quickly. Even if you make a lot of improvements, such as design, readability, reducing bugs, etc., when doing a refactor, you can stop the system’s design from decaying and produce a good design in no time. To conclude, refactoring is useful in saving time when programming.

Deciding when we should refactor our code is not easy. There are several condition when you should start refactoring your code :

The example tells us that the variable stores a ‘photo’ on it.

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