fn main() {
let mut a: [i8; 10] = [42; 10];
a[5] = 0;
println!("a: {:?}", a);
// so this is assigning an immutable tuple
let t: (i8, bool) = (7, true);
println!("t 1st: {}", t.0);
println!("t 2nd: {}", t.1);
}