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Add simple any_of/all_of implementation for C++17

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Jason Rhinelander 2016-12-13 12:23:12 -05:00 committed by Wenzel Jakob
parent fa5d05e15d
commit 6ae68fe301
1 changed files with 4 additions and 1 deletions
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5
include/pybind11/common.h
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@ -385,7 +385,10 @@ template <class T> using negation = bool_constant<!T::value>;
#endif
/// Compile-time all/any/none of that check the ::value of all template types
#if !defined(_MSC_VER)
#ifdef PYBIND11_CPP17
template <class... Ts> using all_of = bool_constant<(Ts::value && ...)>;
template <class... Ts> using any_of = bool_constant<(Ts::value || ...)>;
#elif !defined(_MSC_VER)
template <bool...> struct bools {};
template <class... Ts> using all_of = std::is_same<
bools<Ts::value..., true>,