The "no gc" crowd

[Sean Kelly]

On Oct 10, 2013, at 10:36 AM, Joseph Rushton Wakeling <joseph.wakeling at webdrake.net> wrote:

> On 10/10/13 19:31, Jonathan M Davis wrote:
>> I'm honestly surprised that Andrei is rejecting the idea of casting to/from
>> shared or immutable being normal given how it's required by our current
>> concurrency model. And changing that would be a _big_ change.
> 
> I'm starting to incline towards the view that type qualifications of _any_ kind become problematic once you start working with any types other than built-in, and not just in the context of concurrency.  See e.g.:
> http://d.puremagic.com/issues/show_bug.cgi?id=11148
> http://d.puremagic.com/issues/show_bug.cgi?id=11188

I'm inclined to agree about shared.  But I see this largely as more encouragement to keep data thread-local in D.  If we can clean up move semantics via std.concurrency, I would be reasonably happy with data sharing in D.

As for const / immutable, I guess I don't see this as such an issue because I've been dealing with it in C++ for so long.  You either have to commit 100% to using const attributes or not use them at all.  Anything in between is fraught with problems.