Rust errors

Rust has expressive error handling capabilities. One main mechanism is via the result enum:

enum Result<T, Error> {
	Ok(T),
	Err(Error)
}

If a function executes successfully, it’ll return an Ok value. Otherwise, it’ll return an Err value. From here, we have two options.

• We can handle the error immediately.
• We can propagate the error forward to the caller function, which will handle it.

Error handling

Error propagation