From: Aleksey Gurtovoy (agurtovoy_at_[hidden])
Date: 2002-06-19 06:21:44
Paul Mensonides wrote:
> 1) I modified <boost\mpl\aux_\preprocessor.hpp> so that the
> arguments to
> BOOST_PP_ADD in both BOOST_MPL_AUX_TEMPLATE_PARAMETER and
> BOOST_MPL_AUX_DEFAULT_TEMPLATE_PARAMETER are reversed. This
> is significantly more efficient.
Thanks, Paul. "mpl_v2" follows this Vesa's recommendation as well, I just
didn't integrate the changes back into mpl-development.
> The only major bottleneck remaining is
> BOOST_MPL_AUX_LIST_FACTORY_SPECIALIZATION. In this case, the
> pure *amount* of text all on one line is crippling to EDG's preprocessor.
> only way around this is to use file iteration, I can add that support
> tomorrow if you are interested.
Actually, this file ("boost/mpl/list/factory.hpp") has always been a
bottleneck for EDG-based compilers, and the preprocessed version -
"boost/mpl/aux_/preprocessed/factory.hpp" - should take care of the
performance problems. If it doesn't, then for some reason (not for the first
time) the conditional include on top of original "factory.hpp" header
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