Errors in Rust: A Deep Dive
4 days ago
- #Error Handling
- #Rust
- #Programming
- Rust treats errors as first-class citizens, enforcing error handling at compile time.
- Option type in Rust represents the possibility of a value being Some or None, replacing null.
- Result type in Rust is used for functions that might fail, returning Ok(value) or Err(error).
- Pattern matching is a straightforward way to handle Results and Options in Rust.
- unwrap() and expect() methods allow quick access to values but can cause panics on errors.
- Custom error types can be created using enums and implementing the Error trait.
- The ? operator simplifies error propagation by automatically returning errors from functions.
- Box<dyn Error> can be used to handle different error types dynamically.
- map_err and From trait implementations allow converting between error types.
- Crates like Snafu and anyhow reduce boilerplate in error handling.