{
private:
template<typename T>
- static CV_CONSTEXPR std::true_type check(typename std::is_same<typename std::decay<decltype(std::declval<T>().operator()(std::declval<Args>()...))>::type, Ret>::type*);
+ static CV_CONSTEXPR std::true_type has_parenthesis_operator_check(typename std::is_same<typename std::decay<decltype(std::declval<T>().operator()(std::declval<Args>()...))>::type, Ret>::type*);
- template<typename> static CV_CONSTEXPR std::false_type check(...);
+ template<typename> static CV_CONSTEXPR std::false_type has_parenthesis_operator_check(...);
- typedef decltype(check<C>(0)) type;
+ typedef decltype(has_parenthesis_operator_check<C>(0)) type;
public:
#if __cplusplus >= 201103L || (defined(_MSC_VER) && _MSC_VER >= 1900/*MSVS 2015*/)