Turn a vague idea into inputs, transformations, outputs, and checks
Goal
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Step-by-step
01
Write the goal in one sentence
If the goal is unclear, the code will be unclear.
02
List inputs
Identify files, form values, API responses, database rows, or user actions.
03
Define the output
Specify exactly what successful output looks like.
04
Split transformations
Turn each major transformation into a small function or step.
05
Write one test case first
Use a tiny known example before feeding the program production data.
Verify before moving on
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Troubleshooting
If a command or screen differs from the lesson, stop and verify the version you are using before forcing a change.
What you learned
You now understand the purpose of this part of the system and have a concrete result you can verify before continuing to the next lesson.