Vote on region allocator

[dsimcha]

On 9/25/2011 6:24 PM, Peter Alexander wrote:
> On 25/09/11 10:57 PM, dsimcha wrote:
>> On 9/25/2011 4:40 PM, Peter Alexander wrote:
>>> On 25/09/11 1:20 AM, dsimcha wrote:
>>>> On 9/24/2011 7:55 PM, Andrei Alexandrescu wrote:
>>>>> Defining and using an allocator interface would have a small speed
>>>>> impact (i.e. allocation would entail an indirect call) but I think
>>>>> that
>>>>> would be acceptable.
>>>>
>>>> Agreed. My much bigger concern w.r.t. dynamic interfaces is their
>>>> inflexibility, i.e. that they can't be used effectively with template
>>>> metaprogramming.
>>>
>>> In what way would you want to meta-program with allocators?
>>
>> Allocating arrays, etc.
>
> I'm not following. Can you give an example of something that wouldn't
> work if we had dynamic interfaces instead of templated ones?

T newArray(T, I...)(I sizes);

// Usage:
auto foo = newArray!(uint[])(5);

This would be marginally do-able but very ugly if RTTI were used.