← Rust Programming learning pathRust Programming · Module 6 of 10
Option, Result and error handling
Handle missing values and errors without null or exceptions.
📖 Key ideas
- Option<T> is Some(value) or None: no null in Rust.
- Result<T, E> is Ok(value) or Err(error).
- The ? operator returns early on errors.
- unwrap() panics on None/Err; use carefully.
- Libraries like anyhow and thiserror simplify errors.
💡 Real-life example: Option is a parcel that may be empty; Result is a delivery note saying "delivered" or "failed, here's why".
OptionSome or None
ResultOk or Err
? operatorPropagates errors
unwrapGets value or panics