Re: [Caml-list] Python's yield, Lisp's call-cc or C's setjmp/longjmp in OCaml

[Brian Hurt <bhurt@spnz.org>]

On Tue, 16 Dec 2003, Nuutti Kotivuori wrote:

> I am wondering, does OCaml provide any variant of being able to
> bypass the normal function call and return discipline?
> 
> More or less generic implementations of this can be seen in for
> example Python's yield instruction, Lisp's call-cc or call with
> current continuation, or C's setjmp/longjmp.

By my measurements, Ocaml's exceptions are faster than C's setjmp/longjmp.  
Ocaml doesn't provide first-class continuations, but most of the things 
people actually do with call-cc can be done in other ways in Ocaml.  I 
don't know what Python's yield instruction does.

> 
> And if not, what are the chances of something like that seeing the
> light of day in the future? Are there any fundamental problems in
> OCaml that would make the implementation of such a thing exceedingly
> difficult?

What do you want to do?

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Brian

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