How to make a reverse ordered for loop in Rust?

Question

Editor\'s note: This question was asked before Rust 1.0 was released and the .. \"range\" operator was introduced. The question\'s code no longer

Answer 1

A forward loop is like this:

for x in 0..100 {
    println!("{}", x);
}

And a reverse loop is done by calling Iterator::rev to reverse the order:

for x in (0..100).rev() {
    println!("{}", x);
}