Book Image

Agile Technical Practices Distilled

By : Pedro M. Santos, Marco Consolaro, Alessandro Di Gioia
Book Image

Agile Technical Practices Distilled

By: Pedro M. Santos, Marco Consolaro, Alessandro Di Gioia

Overview of this book

The number of popular technical practices has grown exponentially in the last few years. Learning the common fundamental software development practices can help you become a better programmer. This book uses the term Agile as a wide umbrella and covers Agile principles and practices, as well as most methodologies associated with it. You’ll begin by discovering how driver-navigator, chess clock, and other techniques used in the pair programming approach introduce discipline while writing code. You’ll then learn to safely change the design of your code using refactoring. While learning these techniques, you’ll also explore various best practices to write efficient tests. The concluding chapters of the book delve deep into the SOLID principles - the five design principles that you can use to make your software more understandable, flexible and maintainable. By the end of the book, you will have discovered new ideas for improving your software design skills, the relationship within your team, and the way your business works.
Table of Contents (31 chapters)
Free Chapter
Section 1
Section 2
Section 3
Section 4
Chapter 21
License: CyberDojo

Principle of Least Astonishment

The Principle of Least Astonishment (also known as the WTF principle) states that "People are part of the system. The design should match the user's experience, expectations, and mental models."


Wikipedia, Principle of least astonishment:

The choice of least surprising behavior depends on the expected audience and, hence, on the context.

We are software developers, so the principle says that we shouldn't mislead the developers who will work on the code in the future with names that are not coherent with the behavior inside the constructs.

For example:

int Multiply(int a, int b)
  return a + b;
int SaveFile(string filename, string text)
public class SomethingFactory {
  //returning void???? for a factory????
  public void DoSomething()