3 ms·

IMO the C way is to allow users to explicitly manage context area, along the lines of posix ucontext.h or how the author's closure proposal handle closure alloc

• RossBencina 10mo ago
  Yes that's what I'm thinking. Essentially a stateful function definition defines both a function, and a struct containing the state. I think there needs to be two ways of invoking a stateful function f: (1) if you invoke f within another stateful function g, each call site in g that calls f automatically gets a distinct state instance that becomes part of g's state, on the other hand, (2) if you want to invoke f in a regular (non-stateful) function, you need to manually manage the state and explicitly pass it in. That would be one purpose of the statetype(f) operator: to allow you to explicitly declare a state instance. Manual state management would also be used when you want to invoke f with the same state multiple times (e.g. from within a loop).