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Make mp_at SFINAE-friendly

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This commit is contained in:
Peter Dimov
2017-05-29 05:56:55 +03:00
parent c7923ca041
commit f6d92069a9
3 changed files with 42 additions and 2 deletions
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4
include/boost/mp11/algorithm.hpp
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@@ -325,8 +325,8 @@ template<class L, std::size_t I> struct mp_at_c_impl
} // namespace detail
template<class L, std::size_t I> using mp_at_c = typename detail::mp_at_c_impl<L, I>::type;
template<class L, class I> using mp_at = typename detail::mp_at_c_impl<L, std::size_t{ I::value }>::type;
template<class L, std::size_t I> using mp_at_c = typename mp_if_c<(I < mp_size<L>::value), detail::mp_at_c_impl<L, I>, void>::type;
template<class L, class I> using mp_at = mp_at_c<L, std::size_t{ I::value }>;
// mp_take(_c)<L, N>
namespace detail