Comment by bluecalm

>>That is how all standard library collections in Rust works

Yeah and that's what not going to work for high performance data structures because you need to embed hooks into the objects - not just put objects into a bigger collection object. Once you think in terms of a collection that contains things you have already lost that specific battle.

Another thing that doesn't work very well in Rust (from my understanding, I tried it very briefly) is using multiple memory allocators which is also needed in high performance code. Zig takes care to make it easy and explicit.