Old problem with performance

[Christopher Wright]

Weed wrote:
> Christopher Wright пишет:
>> Weed wrote:
>>> As a result, classes will be slow, or require more code to achieve
>>> speeds comparable to C++.
>>>
>>> That is actually a model of classes D harder than C++.
>> Yes, C++ offers more unsafe optimizations than D.
> 
> 
> Straight to the point!
> I am choosing unsafe but fast code. Unsafe at so much on how much is
> unsafe any code on C++.
> 
> I think the issue is closed. :)

I spoke poorly. C++ enshrines unsafe optimizations as essential language 
features. D simply provides enough metaprogramming and low-level stuff 
that you can do it with a library. C++ gives you a revolver pointed at 
your foot, and you maneuver your target between the revolver and your 
foot. D gives you a kit to make a gun in 5 easy steps!!! and lets you 
point it at your foot if you want.

For instance, you can come up with templates that give you struct 
polymorphism. But you yourself said that that isn't a good idea, and 
that you should not use value types in a polymorphic manner.