Implement `std::iter::Iterator` for arrays?

[mqudsi]

Is it possible to implement a zero-cost, safe, and doesn't-conflict-with-anything-else std::iter::Iterator for arrays, such that it is no longer required to called .iter() to get an iterator out of an array?

e.g. is it possible to use

for value in ["foo", "bar"] {
   ....
}

instead of needing to manually add the .iter():

for value in ["foo", "bar"].iter() {
    ....
}

[cuviper]

You can get the same effect as iter() like this:

for value in &["foo", "bar"] {
   ....
}

This uses the IntoIterator implementation for &[T].

It would also be nice to iterate arrays by value, which your first example would do, but this is waiting on newer compiler features -- see #32871.

[mqudsi]

If #32871 goes through, then that would moot this discussion since the plain syntax would have the (expected) move semantics. Thanks!