220 4734 <CAGsORuDCXfk_2LiQj5Tez4TH1Dz1H-LMYm3-c33fS+vPkGrCzQ@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 18:07:08 -0400
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On Wed, May 29, 2013 at 5:47 PM, Nevin Liber <nevin@eviloverlord.com> wrote:
> Because real users, and in all likelihood the majority of current users of
> vector<bool>, count on the space optimization even though it isn't
> normative, since that was most certainly the intent of the specialization.
> We don't live in an ivory tower.

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.

> IMO, the correct "fix" is (1) address current users who need the space
> optimization that vector<bool> provides, and (2) vector (and generic code
> using vector) should neither know nor care that it is being instantiated
> with a bool.  If that isn't where we are heading, I see no reason to mess
> with either vector or vector<bool>.

That's my initial thought.  I don't like to bother vector<T>, either (
although it does not pollute the actual interfaces).  But the problem
is, how to address the "current users"?

--
Zhihao Yuan, ID lichray
The best way to predict the future is to invent it.
___________________________________________________
4BSD -- http://4bsd.biz/

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