Placeholder
PWI chapter
Validation and Exception Handling
Where validation belongs and where it does not, exception design that fails fast and visibly, message quality, and logging that preserves the failure.
The guidance is language-independent. Implementations differ where the underlying library differs; the concept does not.
C#
Where validation belongs and where it does not, exception design that fails fast and visibly, message quality, and logging that preserves the failure.
Python
Lock the front door and the back doors, fail fast and visibly, exception messages that carry diagnostic context, and a logging policy that does not swallow failure.