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Better is_equal test

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[SVN r73698]
This commit is contained in:
Joel de Guzman
2011-08-12 12:07:36 +00:00
parent adbdf8550c
commit 1c8d339bb0
1 changed files with 13 additions and 5 deletions
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18
include/boost/fusion/algorithm/transformation/pop_back.hpp
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@ -47,14 +47,22 @@ namespace boost { namespace fusion
}
};
template <typename I, bool IsLast_>
struct equal_to_helper
: mpl::identity<typename I::iterator_base_type>
{};
template <typename I>
struct equal_to_helper<I, true>
: result_of::next<
typename I::iterator_base_type>
{};
template <typename I1, typename I2>
struct equal_to
: result_of::equal_to<
typename mpl::if_c<(I1::is_last|I2::is_last)
, typename result_of::next<
typename I1::iterator_base_type>::type
, typename I1::iterator_base_type>::type
, typename I2::iterator_base_type
typename equal_to_helper<I1, I2::is_last>::type
, typename equal_to_helper<I2, I1::is_last>::type
>
{};