Rust Platform

🎯 In Python, you define custom exceptions by subclassing:

class CalcError(Exception): pass class DivisionByZero(CalcError): pass class ParseError(CalcError): def __init__(self, token): self.token = token

Different error types, but they're all classes in an inheritance hierarchy. You catch the base class or specific ones.

Rust uses enums for error types instead of class hierarchies:

#[derive(Debug, PartialEq, Eq)] enum CalcError { DivisionByZero, ParseInt(String), BadFormat, }

Each variant is a distinct error case. The enum carries data when needed …