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

TPP – Defining Obvious Implementation

If we go back to how we evolve code in TDD, we follow these three methods:

  • Fake it
  • Obvious implementation
  • Triangulation

Faking it is a well-defined method; we just return a value that works, and this passes the test.

Triangulation is also well-defined; we just write a new failing test that forces the code to change.

However, obvious implementation is ambiguous. It may mean one thing for one developer and something else for another developer. The transformations in the following table are a way to clarify this ambiguity.

As far as we know, Robert C. Martin was the first to present the idea of evolving code in a sequence of transformations: The Transformation Priority Premise,

TPP Table

Figure 4.3: TPP table

Transformations at the top of the list are preferred to those at the bottom. It is better...