Question 3 [20 Marks] Extreme programming (XP) is a software development methodology which is intended to...

Question 3 [20 Marks]

Extreme programming (XP) is a software development methodology which is intended to improve software quality and responsiveness to changing customer requirements. Briefly explain refactoring and pair programming in Extreme Programming.

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Expert Solution

Extreme programming (XP)- It is an agile software development framework that aims to produce higher quality software and higher quality of life for the development team.Extreme Programming is about getting feedback earlier in the process.

Refactoring in Extreme Programming:

Refactoring is the technique of improving the code without changing any functionality.Refactoring is an on going process of simplification that applies to code,design,testing and XP itself.

The main goal of refactoring is to make the initial code simple.Usually, the code becomes more and more complex during the process of software development.The fact is that developers need to integrate each new task with the previous code.By doing this the developer realizes that the initial code is not perfect and so the best way to avoid this problem is by using the technique of Refactoring in Extreme Programming(XP).

Steps to be followed during Refactoring:

We need to find the proper working test for part of the code we need to refactor.
Conducting the refactoring procedure.
We need to test the unit which is refactored.
Repeat the above mentioned procedure for other units which need to be refactored.

Pair programming in Extreme Programming:

In this style of programming two programmers work side-by-side, sharing one computer, sharing one screen, keyboard, mouse and continuously collaborating on the same design, algorithm, code and test.

It is a social skill that takes time to learn.
It increases the software quality without impacting the time to deliver the code.
This is one of the ways to address the code quality.
By working with an active participant we get continuous code review.

Hence these both mechanisms help in modifying the software quality and meeting the requirements of customers.

venereology answered 1 year ago

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