delegates with C linkage

[bearophile]

Zarathustra:
> I think there is a good chance for create the set examples which show how to use D
> features on the C level. I will thinking about it in my free time :) The idea is
> really interesting and it would be useful(especially to better understand these
> mechanisms) for some people.

I have asked for something similar. In such explanations I'd even like some boxes&arrows diagrams that show the data structures with the pointers, etc. Even few of such images can improve the understanding.

Bye,
bearophile