ts wrote:

> F> What's the difference between P and R language in this case then if it 
> F> is not that a feature should try to solve concrete problems?
> 
>  You think, apparently, that it exist a concrete problem and you think that
>  you can, or need to, to solve it.

No. As I said: I'm providing, not solving. I do the same that Ruby does 
with callcc. And Ruby is no P language, as you said.

Regards,
Florian Gross