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

[Rob T]

You can check if disabling the GC just before the insert process 
improves the performance. You may see 3x performance improvement. 
Disabling is safe provided you re-enable, this can be done 
reliably with scope(exit) or something similar.

import core.memory;

// ...


void main ()
{
	auto f = new container ();
	element.postblit_counter = 0;
         GC.disable;
	foreach (i; 0..LIMIT)
	{
		f.insert (element (i));
	}
         GC.enable;
	writefln ("%s", element.postblit_counter);
}

--rt