Lesson 15 / 25

Errors

Use Errors as part of Astro.

The essential idea

Errors is a practical part of Astro. Start with the problem, then identify the input, transformation, and expected result.

See the learning path

This topic is one step from source code to a useful checked result.

Learning path for Astro.
Figure 6.1 — Keep the full path visible.

Common pitfall

Do not learn Errors by copying. Use a small experiment and feedback to check your explanation.

Quick check

Quick check: What is good practice for Errors?

  • Run one small example.
  • Memorize without testing.
  • Ignore feedback.
Answer

Run one small example. — Focused experiments reveal cause and effect.