How do I handle errors in Rust's async Tokio?

How do I handle errors in Rust's async Tokio?

In Rust's async Tokio, you can handle errors using the Result type. You can use the ? operator to propagate errors.

Can you give me an example of using Result with async functions?

Sure! Here's a simple example:

async fn fetch_data() -> Result<String, MyError> {
    let response = reqwest::get("http://example.com").await?;
    let body = response.text().await?;
    Ok(body)
}

What if I want to handle the error differently instead of propagating it?

You can use pattern matching to handle errors differently. For example:

match fetch_data().await {
    Ok(data) => println!("Data: {}", data),
    Err(e) => eprintln!("Error fetching data: {}", e),
}

Are there any best practices for error handling in async Rust?

Yes! Some best practices include using custom error types, logging errors, and ensuring that your error handling is consistent across your application.