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workaround for windows in index_type typetrait

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This commit is contained in:
Christopher Lackner 2019-08-21 11:03:27 +02:00
parent a363524a98
commit 3869392f0a
1 changed files with 3 additions and 0 deletions
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3
libsrc/core/utils.hpp
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@ -134,6 +134,9 @@ namespace ngcore
private: private:
template<typename T2> template<typename T2>
static constexpr auto check(T2* t) -> typename T2::index_type { return *t; } static constexpr auto check(T2* t) -> typename T2::index_type { return *t; }
// this function is needed for visual because it seems to not lazy evaluate template arguments...
template<typename T2>
static constexpr auto check(T2* t) -> typename enable_if_t<std::is_integral_t<T>> {}
static constexpr auto check(...) -> decltype(std::declval<T>().Size()) static constexpr auto check(...) -> decltype(std::declval<T>().Size())
{ return decltype(std::declval<T>().Size())(); } { return decltype(std::declval<T>().Size())(); }
public: public: