RangeBounds<T> impl for Range*<&T> is missing ?Sized

[talchas]

Much like the impl for (Bounds<&T>, Bounds<&T>), impl<T> RangeBounds<T> for RangeFrom<&T> { could use a T: ?Sized. This would allow

let map = BTreeMap::<String, i32>::new()
map.range::<str, _>("a"..);

to compile the way it does when using Bound. (Unfortunately I think the turbofish is still needed, and I don't see any better way to use range on a String)

(Range and RangeTo of course also would want this)

[kungfukennyg]

This sounds straightforward -- would this be a good issue for someone relatively new to contributing?

[Mark-Simulacrum]

Yes, I think a PR here is the best way to go, probably we'd want to add ?Sized to all the RangeBounds impls

[ThatsNoMoon]

Based on the reception to #64327, should this be closed? I ran into this trying to use BTreeMap::range, but it doesn't seem like this implementation is practical/desired.

[Dylan-DPC]

Closing this based on the comments in #64327