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Implement mp_any in terms of mp_count

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This commit is contained in:
Peter Dimov
2021-03-23 03:11:03 +02:00
parent ae4c83c8a6
commit 9215c68d35
1 changed files with 3 additions and 3 deletions
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6
include/boost/mp11/function.hpp
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@ -123,13 +123,13 @@ template<class T1, class... T> struct mp_or_impl<T1, T...>
// mp_any<T...> // mp_any<T...>
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86356 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86356
#if defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS ) && !BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, != 0 ) && !BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 ) #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 ) || BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, != 0 )
template<class... T> using mp_any = mp_bool<(static_cast<bool>(T::value) || ...)>; template<class... T> using mp_any = mp_bool< mp_count_if< mp_list<T...>, mp_to_bool >::value != 0 >;
#else #else
template<class... T> using mp_any = mp_bool< mp_count_if< mp_list<T...>, mp_to_bool >::value != 0 >; template<class... T> using mp_any = mp_bool< mp_count< mp_list<mp_to_bool<T>...>, mp_true >::value != 0 >;
#endif #endif