I implemented delegates in D

[maik klein via Digitalmars-d]

On Friday, 10 June 2016 at 00:23:13 UTC, Mathias Lang wrote:
> 2016-06-10 1:20 GMT+02:00 maik klein via Digitalmars-d < 
> digitalmars-d at puremagic.com>:


> Did you try to send a native delegate ? I would be very 
> surprised if you were allowed to do so.

That is what I am currently doing and it at least appears to be 
working as intended.

> Note that not all delegates allocate. Function local delegate 
> refering to variable do, but the one refering to aggregate 
> never do.

All my closures/delegated need to capture a local variable. They 
capture a pointer to a heap allocated "Cell". I use the cell as a 
primitive to write my result into. It has an internal atomic 
counter, if the counter as decremented to 0, I know that I can 
safely read from it.

I am not sure how I would implement it differently.

So that means that all my delegates allocate, and they allocate 
with the GC.