pub fn types_module() {
    // casting with as: types can be casted as long as the types overlap.
    let decimal = 65.4321;
    let integer: u8 = decimal as u8;

    println!("The decimal {} is casted to the u8 {}", decimal, integer);

    // dangerous carting can be done with some methods
    unsafe {
        println!(
            "f32 -100.0 as u8 is : {}",
            (-100.0_f32).to_int_unchecked::<u8>()
        );
    }

    // type alias are also a thing
    type Inch = u64;
    let inch: Inch = 5;
    println!("using type aliases {}", inch);
}