Custom Exceptions and rethrow
Define meaningful errors and re-raise them.
Errors That Mean Something
Generic exceptions hide intent. A custom exception names the exact problem, making failures readable across your whole app. 🏷️
Implementing Exception
Create a class that implements Exception. That marks it as a throwable error type Dart and readers recognize instantly.
class PaymentException implements Exception {}All lessons in this course
- throw, try, and catch
- on Clauses and Exception Types
- finally and Guaranteed Cleanup
- Custom Exceptions and rethrow