std.container.RedBlackTree versus C++ std::set

[Ivan Kazmenko]

Dmitry Olshansky wrote:
>> D2 (DMD 2.059, -O):             11,389,556
>
> I'd add :
>
> -release -inline
>
> or it may not inline away temporary copies.

Thank you for the suggestion.  However, the result after "-O 
-release -inline" is still 11,389,556.