Template Class error lnk2019: external symbols that cannot be parsed

If an error occurs during template class Compilation: "error lnk2019: external symbols that cannot be parsed...", there are two solutions:

The first method is to include both the Declaration file (interface file )(. h file). It also contains the implementation file of the class template (. CPP file.

The second method is to place the Declaration and definition of the member functions in the class template in the class definition (. h file). Do not separate them.

Post: http://blog.csdn.net/rbagglo/article/details/5803291

Supplement:

C ++ npv2 can see the following practices, directly introduce the template file in the header file:

#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)#include "Reactor_Logging_Server_T.cpp"#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */