Stage 5.7: Error Handling

Result is so common that Rust has a powerful operator ? for working with them. These two statements are equivalent:

match do_something_that_might_fail() {
    Ok(v) => v,
    Err(e) => return Err(e),
}

Further information:

• https://doc.rust-lang.org/book/ch09-00-error-handling.html