Re: [boost] c++03 library survey

Subject: Re: [boost] c++03 library survey
From: degski (degski_at_[hidden])
Date: 2018-08-28 17:21:39

On Tue, 28 Aug 2018 at 19:06, Robert Ramey via Boost <boost_at_[hidden]>
wrote:

> Actually, I think the the impact of move semantics on performance of
> well written existing code is minimal.  On new code which uses more
> types as values it's helpful.
>

I don't think it has anything to do with whether the code is well written,
copying a pointer f.e. is not the same as copying a whole array of data,
because that could [should be] be the difference between move assignment
and copy assignment.

Of course if the library were written today, it would all the new stuff.
>   I don't think it would be faster (unless it were made header only) but
> it would likely have have half the number of lines of code (or less).
>

Header only is of no interest, whatsoever, in terms of performance, that's
not how things work (inlining could be affected, but that's about it, I
would say)
.

> But the years long slog to address corner cases, workarounds for
> compiler bugs and standard library bugs, etc. And there would be design
> changes which would also create a bunch of ripple effects. So it would
> really end up as a whole re-write.
>

Yes, it's a major job, hence all the resentment.

degski
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