std.allocator needs your help

[Johannes Pfau]

Am Mon, 23 Sep 2013 18:36:57 +0200
schrieb Andrej Mitrovic <andrej.mitrovich at gmail.com>:

> On 9/23/13, Johannes Pfau <nospam at example.com> wrote:
> > New should then be considered as deprecated and replaced by
> > create!(GCAllocator, Class)().
> 
> What? That's never gonna happen. For one thing, it looks ugly as hell.
> And for another, it's going to break everything written in D.

That's why I say "considered" and not really deprecated. But if you
want to / have to write allocator aware code which can use the GC it's a
nice solution:

auto list(Payload, Allocator = GCAllocator)()
{
    create!(Allocator) ...
}

Of course the API should be improved.
For example create could default to the GC allocator. Then it's
"auto a = new Class(...)" vs "auto a = create!Class(...)".

But IIRC when emplace was first implemented and class allocators were
removed it was quite clear that new could be easily replaced by a
template function and has no real place as a builtin anymore. It's just
too late to remove it.