Go has channels which are much more like fibers. Full threads of their own with actual stacks (which can be moved in Go). If C++ or Rust ever get coroutines th

Go has channels which are much more like fibers. Full threads of their own with actual stacks (which can be moved in Go). If C++ or Rust ever get coroutines they will be more low-level. Just a control flow construct which compiles coroutines down to state machines. So it's concurrency, not parallelism. High performance for one thread, but less powerful conceptually. Rust used to have segmented stacks, but they removed it because performance was unpredictable.