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Practice

Error handling workout

⭐ beginner~40 min of coding4 challenges

Parsers, transfers, retries, and custom types — contracts under discriminating tests.

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What you will practice

  1. ParseAge with layered validation⭐ beginner
  2. ATM with a custom exception⭐ beginner
  3. Retry with attempt budget⭐ beginner
  4. Transfer with cleanup discipline⭐ beginner

Need the concept first? Re-read the lesson.