paulkernfeld / contiguous-data-in-rust Goto Github PK

It's a vec where length, capacity, an extra thing of your choosing and everything in the array all go together on the other side of the pointer: https://docs.rs/header-vec/0.1.0/header_vec/struct.HeaderVec.html it seems to be popular with graph datastructures.

While I was looking for it, I found my way here first, so it might help people if you put up a signpost.

When working with SIMD, for example, memory alignment may matter.

It would be good if this guide also discusses ways to allocate memory for SIMD that is, e.g., aligned to 64-byte boundaries.

I found tinyvec because of your guide, but I'd like to note that the difference isn't just that its elements must implement Default, they must also implement Copy (mutually exclusive with Drop). I was helping someone in Discord who needed a type that could vary in length and be Copied.