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Subject: Re: [Boost-users] foreach question
From: Jerry Jeremiah (jerry.jeremiah_at_[hidden])
Date: 2010-10-17 16:49:08
Pete Bartlett <pete <at> pcbartlett.com> writes:
>
> See this thread http://thread.gmane.org/gmane.comp.lib.boost.user/54162
> And the resulting Trac ticket: https://svn.boost.org/trac/boost/ticket/3469
>
> for a essentially negative answer.
>
Personally, I like the answer in that thread that said:
#define INDEX_FOREACH(index,a,b) \
for(unsigned int index = static_cast<unsigned int>(-1); \
index == static_cast<unsigned int>(-1);) \
BOOST_FOREACH(a,b) if(++index,true)
The for loop just does a variable declaration in a way that means you won't
get bit by using it somewhere that doesn't allow variable declarations.
Convoluted but important.
Of course, it isn't that generic - it always assumes you want an int index.
But then that is what the question said...
Jerry
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