Reversing a string in Rust

Question

What is wrong with this:

fn main() {
    let word: &str = "lowks";
    assert_eq!(word.chars().rev(), "skwol");
}

I get an error like this:

error[E0369]: binary operation `==` cannot be applied to type `std::iter::Rev<std::str::Chars<'_>>`
 --> src/main.rs:4:5
  |
4 |     assert_eq!(word.chars().rev(), "skwol");
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: an implementation of `std::cmp::PartialEq` might be missing for `std::iter::Rev<std::str::Chars<'_>>`
  = note: this error originates in a macro outside of the current crate

What is the correct way to do this?

Answer 1

Since, as @DK. suggested, .graphemes() isn't available on &str in stable, you might as well just do what @huon suggested in the comments:

fn main() {
    let foo = "palimpsest";
    println!("{}", foo.chars().rev().collect::<String>());
}