Part 1: Gaining Clarity

Before you start writing code, it is important to develop a solid understanding of your concept and approach (Figure 1).
Specifically, in this first part of the book, we’ll examine your software-to-be from a holistic, external, and internal perspective to gain clarity on:

• Outcome: Why is your idea worth implementing? (1  Outcome: Why?)
• Output: What should your implementation look like to users? (2  Output: What?)
• State & Flow: How could you best implement this? (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.