D vs C++11

[bearophile]

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