SFML Game Development book problem ( chapter 3 )

[MaxdeoxiS]

It works! Thanks a lot man

[AlexAUT]

Then I guess you have messed up your includes 

You have to include the *.inl at the bottom (after the class declaration) of the hpp. And do not include the *.hpp in the *.inl




AlexAUT

[Nexus]

Since ResourceHolder is not a class, but a class template, the whole definition (including member function definitions) has to be available in the header file. Don't use a .cpp file. A typical way to separate header and implementation for templates is to provide a .hpp file as usual, and include the implementation at the end, in the form of a .inl file.