Re: [Boost-users] [foreach] #define foreach BOOST_FOREACH

Subject: Re: [Boost-users] [foreach] #define foreach BOOST_FOREACH
From: Eric Niebler (eric_at_[hidden])
Date: 2011-11-17 23:35:58

On 11/16/2011 1:41 PM, Joaquin M Lopez Munoz wrote:
> In Boost.Foreach docs, the user is informed about the possibility
> to do
> 
> #define foreach BOOST_FOREACH
> 
> so as to improve readability, provided there's no collisions in
> her code with the name 'foreach'. I think this advise is extremely
> unfortunate, because the collision happens right within Boost.Foreach
> code itself, as it uses the namespace boost::foreach internally. This
> results in problems like the one described in
> 
> http://lists.boost.org/boost-users/2011/11/71762.php
> 
> I think the only viable fix is to rename boost::foreach as
> boost::foreach_ or something and assume backwards incompatibility
> (as for Boost.MultiIndex, I'd have no problem in syncing up),
> unless someone figures out a smarter workaround.

A truly awful problem entirely of my own making. And that's the worst
kind. I've found an equally awful workaround that is (I believe)
compatibility-preserving:

https://svn.boost.org/trac/boost/changeset/75540

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com