Slow performance compared to C++, ideas?

[Andrei Alexandrescu]

On 6/3/13 8:18 PM, Jonathan M Davis wrote:
> So, the breakage is minimal and noisy, but it _is_ still breakage. If we were
> starting from scratch, I really don't think that there would be much excuse
> for not making functions non-virtual by default given that we require
> overriding functions to be marked with override, but it is more of an open
> question when we're this far into the game. I still think that it's worth
> making the change though.

Absolutely it is breakage. The entire discussion is aimless though 
because it compares poorly costs and benefits of very different design 
choices, and as you mention at completely different historical times.

It's useless to focus on the breakage override has caused. Yes it did 
cause breakage. There is no conclusion to draw from that without 
considering the considerably complex dynamics surrounding the whole 
matter (experience, benefits, number of users affected positively and 
negatively).

To use that breakage as an argument linked to absorbing breakage caused 
by switching to final-by-default does not make sense. I'll try to 
abstain replying to this particular point in the future, it just 
instantly lowers the quality of the dialog.


Andrei