Investigating why AppVeyor is failing by breaking out the individual pieces

Author: EALePain

include/nlohmann/detail/input/input_adapters.hpp

@@ -443,6 +443,10 @@ using std::end;
 template<typename ContainerType, typename Enable = void>
 struct container_input_adapter_factory {};
 
+using bob = decltype(begin(std::declval<std::string>()), end(std::declval<std::string>()));
+using george = void_t<bob>;
+using alice = decltype(input_adapter(begin(std::declval<std::string>()), end(std::declval<std::string>())));
+
 template<typename ContainerType>
 struct container_input_adapter_factory< ContainerType,
        void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>