immutable access to RawTable?

[tower120]

Why there is no immutable access to RawTable both in HashMap and HashSet?

For example, I want to emulate absent HashSet::raw_entry().from_hash... with HashSet::raw_table().get()
but there is only mutable access to underlying RawTable in both HashSet and HashMap.

And is there a reason why there is no raw_entry API for HashSet?

[Amanieu]

This is an oversight. We should probably have both raw_table and raw_table_mut methods.

There is no raw_entry API for HashSet simply because nobody has implemented one yet. But then again there are concerns about the raw entry API and whether we should keep it at all.

[tower120]

OK. I can implement raw_table + raw_table_mut and PR it - that's not problem.

Wouldn't it be a breaking change?
Maybe something like raw_table_immut instead?

[Amanieu]

The raw API isn't very stable, it's fine to make breaking changes. We'll just make another major version bump.

[tower120]

So can I do it now? Will you review/accept that PR?

[Amanieu]

Yes, but it may take a while until we actually publish a new release. I want to get all of the breaking changes in at once.

[tower120]

OK - sure. I'm starting the implementation.