[dmd-concurrency] Defining shared delegates

[Robert Jacques]

On Tue, 19 Jan 2010 15:20:07 -0500, Andrei Alexandrescu  
<andrei at erdani.com> wrote:
> One suggestion about shared delegates: should we take the executive  
> decision to not define them at all? There's nothing you can do with  
> delegates that you can't do with classes. Although generally delegates  
> do justify their existence because they're more comfy than e.g. local  
> classes, it doesn't strike me as obvious we'll need comparable  
> convenience when dealing with shared classes.
>
> Andrei

I can express pretty much all of my parallel research algorithms safely  
using const delegates, I can't express any of them safely using a shared  
class: I'd have to cast/cowboy everything. I'd think this will be true of  
most OpenMP / data parallel algorithms. And I think not supporting data  
parallel algorithms cleanly would be just as bad as not supporting clean  
message passing.