[sillysaurus3]

That’s one option. But the unfortunate conclusion of that choice is that continuations leak a lot of memory. One shot continuations are better, since it frees up the variable references.

[mehrdadn]

I don't see how this is different from lambdas in general, in JS/Python/etc... wouldn't it only be held as long as the variables are alive? If you use the callback only once then they should be eligible to be freed after being used once.

[sillysaurus3]

http://okmij.org/ftp/continuations/against-callcc.html is pretty informative. It was kind of eye opening to see just how many corner cases there are when dealing with continuations.

(See the section “memory leaks”.)

[mehrdadn]

Thanks for the link! Unfortunately I don't understand what it's saying the issue is... would you have a simple example to illustrate? It's been years since I did Scheme, I've never actually needed to use call/cc in a program, and I'm not advanced enough in Scheme to have seen shift/reset (as with call/c, their documentation is not quite clear). :\

[sillysaurus3]

I could, but not at 3 AM. :) I'll try to remember tomorrow.