Rust Error Handling - Result Enum, ? Operator & unwrap Methods | Beginner Tutorial

Learn Rust's powerful error handling system! This tutorial covers the Result enum, the question mark operator, and convenient methods for handling errors safely. 📚 What You'll Learn: • The Result enum with Ok and Err variants • Pattern matching on Result values • The ? operator for clean error propagation • unwrap, expect, unwrap_or, and unwrap_or_else methods • When to use each error handling approach 💻 Code Examples: 1. Result Basics - Division with error handling: fn divide(a: f64, b: f64) returns Result { if b == 0.0 { return Err("Cannot divide by zero!"); } Ok(a / b) } 2. The ? Operator - Automatic error propagation: fn add_strings(a, b) returns Result { let num1 = parse_number(a)?; let num2 = parse_number(b)?; Ok(num1 + num2) } 3. Quick Handling Methods: • .unwrap() - Extract value or panic • .expect("message") - Unwrap with custom panic message • .unwrap_or(default) - Provide fallback value • .unwrap_or_else(closure) - Compute fallback 🔑 Key Concepts: • Result forces explicit error handling • Ok(value) represents success • Err(error) represents failure • The ? operator returns early on error • Match exhaustively handles both cases Created by Celeste ✨ #