A function in Rust language to divide one number by another.

main.rs

// Full tutorial : https://daily-dose-of-rust-language.pereere.com/2023/05/15/a-simple-example-of-error-handling-and-testing-in-rust/ 

fn divide(a: f64, b: f64) -> Result<f64, String> {
    if 0.0 == b {
        return Result::Err("Hey, you can't divide by zero".to_string()); // Checking if b is equal to zero. If true, return an Err variant of the Result enum with an error message.
    }
    return Result::Ok(a / b); // If the condition is false, return an Ok variant of the Result enum with the result of dividing a by b.
}