A little of coordination for Rosettacode

[bearophile]

Stanislav Blinov:

> You'd also have to synchronize access to id member,

> I forgot to note that both synchronized {} blocks should also 
> be synchronizing on the same mutex.

> The mutex could be emulated with a shared bool and 
> std.atomic.cas(). That would get rid of synchronized{} blocks 
> and would potentionally be faster.

This is the current D entry:

http://rosettacode.org/wiki/Rendezvous#D

If you have bug fixes, or improvements, it's better to do them 
right there. Of if you don't want to register on that site, you 
can put the modified version in dpaste, and I'll upload it on 
Rosettacode.

Bye,
bearophile