Error handling#

Choose the outcome that matches the situation: Result for an expected failure with an explanation, Optional for a missing value, and a fault for a broken programming assumption. These pages show how callers respond to each one.

Concept	What you will learn
Expected failures with Result	Return success or domain errors as ordinary values.
Error propagation with try	Forward compatible errors without hiding faults or cancellation.
Programming faults	Check invariants and understand task failure after cleanup.