220 4737 <CAGsORuCyOp146CJeveo9-hDA_JM=gACfs0kAadJrOtKHG5tGSw@mail.gmail.com> article
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From: Zhihao Yuan <lichray@gmail.com>
Newsgroups: gmane.comp.lang.c++.isocpp.proposals
Subject: Re: Remove vector<bool>?
Date: Wed, 29 May 2013 19:03:08 -0400
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On Wed, May 29, 2013 at 6:15 PM, Nevin Liber <nevin@eviloverlord.com> wrote:
>> When I say "optimization words" I mean the words those break the
>> container natural to allow the optimization.  If you remove the those
>> words,
>> the optimization is disabled.  The real users can longer count on it.
>
>
> If this breaks users of C++14 vector<bool>, then it is a non-starter for
> C++17.

If the non-mandatory optimization is required to be kept, then I'm
pretty sure we can make no useful changes to C++14 vector<bool>.

> With a new class that has the optimizations Howard talked about, as well as
> a transition period of (at least) one standard cycle where the old behavior
> of vector<bool> is deprecated but doesn't change.

TS: std::bit_vector
C++17: deprecation
C++2x: removal (completely)

You mean this?  OMG...

--
Zhihao Yuan, ID lichray
The best way to predict the future is to invent it.
___________________________________________________
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