rustlings-solutions/exercises/22_clippy/clippy3.rs

26 lines
693 B
Rust

// 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_none() {
println!("This is none!");
}
let my_arr = &[-1, -2, -3, -4, -5, -6];
println!("My array! Here it is: {:?}", my_arr);
let mut my_empty_vec = vec![1, 2, 3, 4, 5];
my_empty_vec.clear();
println!("This Vec is empty, see? {:?}", my_empty_vec);
let mut value_a = 45;
let mut value_b = 66;
// Let's swap these two!
std::mem::swap(&mut value_a, &mut value_b);
println!("value a: {}; value b: {}", value_a, value_b);
}