Re: [boost] Re: Re: Re: Zero Unnecessary Temporary Objects: A Revolution

From: Victor A. Wagner, Jr. (vawjr_at_[hidden])
Date: 2002-10-13 21:58:07

At Sunday 2002/10/13 16:39, you wrote:

>"Terje Slettebø" <tslettebo_at_[hidden]> wrote in message
>news:058901c272c8$a261f6b0$60fb5dd5_at_pc...
> >From: "Yitzhak Sapir" <yitzhaks_at_[hidden]>
>
> >On Sun, 13 Oct 2002, [iso-8859-1] Terje Slettebø wrote:
>
>
> >As I understand, the only thing you can safely do with an end() iterator is
> >to compare it with other iterators.
>
>    If operator-- is defined on an iterator, and begin() != end(), then it is
>also safe to decrement an iterator that is equal to end().
>reverse_iterators depend on this fact.  This is why rbegin().base() ==
>end().

I don't see how that follows.  I agree that rbegin().base() == end(), but 
don't see how that implies that ANY operations on end() are legal.

>Joe Gottman
>
>
>
>
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Victor A. Wagner Jr.      http://rudbek.com
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