Quick post about problem which I already solved, but think that could be handy for someone else.
I have following code:
1 2 3 4 5 6 7 8 9 10 | template<class T>struct Test{ T val; template <class T2> void DoSomething( T2 &obj ) { obj.FindByType<int>(); }}; |
When compiling under Visual studio, everything is ok. But when try the same code snippet under g++, have following error:
1 2 3 | test.cpp: In member function ‘void Test<T>::DoSomething(T2&)’:test.cpp:48: error: expected primary-expression before ‘int’test.cpp:48: error: expected ‘;’ before ‘int’ |
This is because compiler doesn’t known FindByType method, because T2 is templated argument. The solution which I found is in adding keyword template before FindByType method name. So updated source code will look like this:
1 2 3 4 5 6 7 8 9 10 | template<class T>struct Test{ T val; template <class T2> void DoSomething( T2 &obj ) { obj.template FindByType<int>(); }}; |
After this update, code will be compiled correctly under both compilers.
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