What are some effective error propagation techniques in Rust?

What are some effective error propagation techniques in Rust?

In Rust, you can use the Result and Option types for error propagation. Would you like to know more about how they work?

Yes, how does the Result type help in error handling?

The Result type is an enum that can be either Ok(T) for success or Err(E) for an error. It allows you to handle errors explicitly.

Can you give me an example of using Result in a function?

Sure! Here's a simple example:

fn divide(a: f64, b: f64) -> Result<f64, String> {
    if b == 0.0 {
        Err("Cannot divide by zero".to_string())
    } else {
        Ok(a / b)
    }
}

This function returns a Result indicating success or failure.

What about using the ? operator for error propagation?

The ? operator simplifies error handling by automatically returning the error if the Result is Err. It makes your code cleaner!