Jacob Carlborg:
I would say that D is fairly scalable in it's set of features. You can (mostly) program in D as you would in, say, Java
D offers most features present in Java, but the relative efficiency of some operations is not the same. HotSpot de-virtualizes, unroll run-time-bound loops, and most importantly has an efficient generational GC (and other newer GCs like G1) that changes significantly the efficiency of allocations and memory releases. The result is that if you program in D creating lot of short lived garbage as you do in Java, you will see a low(er) performance. So in D it's better to allocate in-place with structs where possible.
I would absolutely say that the gap is getting thinner. I would mostly say that with C++11 C++ has finally started to catch up with D and the rest of the world.
C++ is a moving target :-) http://root.cern.ch/drupal/content/c14 Bye, bearophile
