rustHow to get error message in Rust

Rust provides a number of ways to get error messages. The most common way is to use the Result type. Result is an enum that can either be Ok or Err. If the operation is successful, Ok is returned, otherwise Err is returned with an error message.

Code example:

let result = some_function();

match result {
    Ok(value) => println!("Success: {}", value),
    Err(err) => println!("Error: {}", err),
}

Output

Success: some_value

Explanation:

1. The some_function() function is called and the result is stored in the result variable.
2. The match statement is used to check the value of result.
3. If result is Ok, the println! macro is used to print the value of value.
4. If result is Err, the println! macro is used to print the error message stored in err.

Helpful links:

1. Rust Documentation - Error Handling
2. Rust Documentation - The Result Type

Edit this code on GitHub