Please show, don't tell. Your sibling explained that they meant only function call optimization. And I would say it's debatable that this is an "optimization" s

Please show, don't tell. Your sibling explained that they meant only function call optimization. And I would say it's debatable that this is an "optimization" since slices would be a new concept that is distinct from structs. I agree though that the obvious naive choice would be to pass them in the same way that structs of { ptr, len } are passed in the ABI.