rustlings/exercises/22_clippy/clippy3.rs

// clippy3.rs
// 
// Here's a couple more easy Clippy fixes, so you can see its utility.
// No hints.


#[allow(unused_variables, unused_assignments)]
fn main() {
    let my_option: Option<()> = None;
    if my_option.is_some() {
        println!("There's something!");
    } else {
        println!("There's nothing!");
    }

    let my_arr = &[
        -1, -2, -3,
        -4, -5, -6
    ];
    println!("My array! Here it is: {:?}", my_arr);

    vec![1, 2, 3, 4, 5].resize(0, 5);
    println!("This Vec is empty, see? {:?}", ());

    let mut value_a = 45;
    let mut value_b = 66;
    // Let's swap these two!
    std::mem::swap(&mut value_a, &mut value_b);
    // value_a = value_b;
    // value_b = value_a;
    println!("value a: {}; value b: {}", value_a, value_b);
}