Gaining Clarity

Before your start writing code, it is important to gain clarity on your concept and approach (Figure 1). Specifically, in this first part of the book we’ll examine:

• The outcome we want to achieve, i.e., why we develop software in the first place (1  Outcome: Why?).
• What output creates the most value for our users (2  Output: What?).
• What code generates this output and how do we get from working code to good code (3  State & Flow: How?).

Figure 1: A developer writes code, which is then executed to generate some output that is consumed by a user. Before you start writing this code, it is important to gain clarity on the why, what, and how of your solution.