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update has_ReturnType to be more consistent with other has_ helpers

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This commit is contained in:
Gael Guennebaud 2017-03-17 17:33:15 +01:00
parent fd7db52f9b
commit aae19c70ac
1 changed files with 3 additions and 3 deletions
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6
Eigen/src/Core/util/Meta.h
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@ -433,10 +433,10 @@ struct meta_no { char a[2]; };
template <typename T> template <typename T>
struct has_ReturnType struct has_ReturnType
{ {
template <typename C> static meta_yes testFunctor(typename C::ReturnType const *); template <typename C> static meta_yes testFunctor(C const *, typename C::ReturnType const * = 0);
template <typename C> static meta_no testFunctor(...); template <typename C> static meta_no testFunctor(...);
enum { value = sizeof(testFunctor<T>(0)) == sizeof(meta_yes) }; enum { value = sizeof(testFunctor<T>(static_cast<T*>(0))) == sizeof(meta_yes) };
}; };
template<typename T> const T* return_ptr(); template<typename T> const T* return_ptr();