[orlp]

Author of slotmap here.

There is absolutely no need for unsafe in slotmap. I chose to use unsafe (wrapped in a safe API) to reduce memory usage using intrusive linked freelists. If done using safe Rust this would involve `enum`s that would take up extra space.

[junon]

Slotmap is one of my favorite crates, by the way. Thank you for putting it out there!

[pjmlp]

Thus not adequate for performance requirements.

[junon]

.... that has nothing to do with the allocator though