Doc states no iter_mut on HashMap but there is

[BarePotato]

rust/library/core/src/iter/mod.rs

Lines 245 to 248 in 1eb7258

	//! While many collections offer `iter()`, not all offer `iter_mut()`. For
	//! example, mutating the keys of a [`HashSet<T>`] or [`HashMap<K, V>`] could
	//! put the collection into an inconsistent state if the key hashes change, so
	//! these collections only offer `iter()`.

While many collections offer iter(), not all offer iter_mut(). For example, mutating the keys of a HashSet or HashMap<K, V> could put the collection into an inconsistent state if the key hashes change, so these collections only offer iter().

HashMap clearly has iter_mut https://doc.rust-lang.org/std/collections/struct.HashMap.html#method.iter_mut while HashSet does not.

Docs should be changed to reflect this. I would be happy to do this, but as I have not contributed to Rust before, wanted to make sure I didn't miss something here.

[BarePotato]

I also realize that the key itself is reference as seen here https://doc.rust-lang.org/std/collections/hash_map/struct.IterMut.html#associatedtype.Item but feel the wording here being updated is still valid.

[compiler-errors]

I agree this wording should be updated. Perhaps "or HashMap<K, V>" should just be removed.

[compiler-errors]

@BarePotato are you still planning on making this change?

[lupd]

@rustbot label +A-docs +E-easy