Subject: Re: [boost] tie alternative?
From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2008-10-28 17:24:43
David Abrahams skrev:
> on Tue Oct 28 2008, Thorsten Ottosen <thorsten.ottosen-AT-dezide.com> wrote:
>> Benoit skrev:
>>> Another idea might be to directly use a pair of iterators by creating
>>> a special structure for "duplicate pairs"...
>>> for( duplicate_pair<vertex_iterator> vip( vertices( g ) ) ; vip.first
>>> != vip.second ; ++vip.first )
>>> I am not sure there's a real gain here though. Oh well. Can't blame me
>>> for trying ! :-)
>> FWIW, You can already today do
>> for( boost::iterator_range<vertex_iterator> vip( vertices( g ) ) ;
>> !vip.empty(); vip.advance_begin(1) )
> It's sad, but I'm not as confident in the ability to optimize that form
> because the iterators are bundled into a single struct. Also I am not
> fond of the constant 1.
I haven't tried on a new compiler (only vc8), but it is quite sad that
compilers can't optimize std::advance(i,1) into ++i.
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