Error Handling

Result and Option as ordinary values instead of exceptions, recoverable versus unrecoverable errors, and how the `?` operator formalizes propagation.

Learn Rust error handling basics with Option and Result. Explore examples using match, unwrap, expect, and the ? operator for robust code.

Learn how Rust's ? operator simplifies error propagation by early-returning Err and unwrapping Ok with automatic error conversion.

Learn when to use panic! for unrecoverable bugs and Result for expected failures in Rust, with examples for I/O, validation, and invariant violations.

Learn to define custom error types in Rust using enums, implement std::error::Error, Display, and From for ergonomic error handling.

Derive Display, Error, and From for error enums in Rust libraries using thiserror. Learn how to implement and handle common pitfalls.

Learn how to use the anyhow crate for flexible application error handling in Rust, including context attachment and error propagation.

Attach context to Rust errors as they propagate and enable backtraces with RUST_BACKTRACE=1 to pinpoint failure origins.

Learn to transform and chain Rust Option values using combinators like map, and_then, unwrap_or, and ? for cleaner code.

Learn best practices for Rust error handling in libraries and applications. Understand when to use typed errors, anyhow/eyre, and avoid unwraps.

A single-page roundup of every highlight bullet from the 11 pages in the Error Handling section, grouped by source page so you can scan all 64 takeaways without opening each article individually.