[gtoast]

Can anyone point me in the direction some call with continuation and stack and heap explainer? It would be great if it was brief and visual but I'm willing to read up. I just want to make sure that an explanation of call/cc is forthcoming.

[justinethier]

Here is a basic introduction to the stack and heap, with examples in C: http://gribblelab.org/CBootcamp/7_Memory_Stack_vs_Heap.html

This might help with continuations: https://en.wikipedia.org/wiki/Continuation

Here is a really simple example of simulating a C return using call/cc:

  (display
    (call/cc
      (lambda (return)
        (display "hello ")
        (return "world")
        (display "never reached"))))

[qwertyuiop924]

For continuations, I would actually recomend "LAMBDA: The Ultimate Imperative" (http://repository.readscheme.org/ftp/papers/ai-lab-pubs/AIM-...). It's not exactly light reading, but it gives the best explanation of continuations that I've seen.

If you just want the simple explanation: A continuation is a copy of the return stack at the instant it was captured. When a continuation is invoked, that copy replaces the stack.

[gtoast]

This is perfect! Thank you!

[gtoast]

Thanks!

[qwertyuiop924]

What exactly about them do you want explained? I'll do my best to do it, or give a link, but I'm not sure if you want a general explanation of all three, or an explanation of the connection beteen them.