[Challenge] implementing the ambiguous operator in D

[Denis Koroskin]

On Sun, 05 Sep 2010 16:59:31 +0400, Philippe Sigaud  
<philippe.sigaud at gmail.com> wrote:

> But the real challenge in the SO question is the 'going back in time'  
> part,
> which I have trouble to understand : how can you modify x and y through a
> multiplication and a comparison?
>

It can be done using setjmp/longjmp, see C implementation for an example:

http://homepage.mac.com/sigfpe/Computing/continuations.html