We'll have to wait and see how finished coroutines implementations perform, but I'm leery of the fact that sidestepping heap allocation relies on compiler optim

We'll have to wait and see how finished coroutines implementations perform, but I'm leery of the fact that sidestepping heap allocation relies on compiler optimizations. Optimizers can be fickle and in a language like C++/Rust, I like being 100% sure that the abstractions are zero-overhead.