d future or plans for d3

[Andrei Alexandrescu]

On 12/20/11 5:17 AM, Froglegs wrote:
> The array concatenation requiring GC I get, but why does a delegate
> require it?
>
> This link says D allocates closures on the heap
>
> http://en.wikipedia.org/wiki/Anonymous_function#D
>
> I don't really get why, C++ lambda works well(aside from broken lack of
> template lambda's) and do not require heap usage, even binding it to
> std::function can generally avoid it if it doesn't exceed the SBO size

Well another way of putting it is std::function MUST do heap allocation 
if environment size exceeds the SBO size. It's the same thing here.

Just like C++ lambdas, D lambdas and local functions don't need heap 
allocation unless they escape their scope.


Andrei