How to create a template function within a class C

Question

I know it s possible to make a template function   template lt typename T gt  void DoSomeThing T x      and it s possible to make a template class   template lt typename T gt  class Object   public      int x       but is it possible to make a class not within a template  and then make a function in that class a template  Ie     I have no idea if this is right  this is just how I think it would look class Object   public      template lt class T gt      void DoX          or something to the extent  where the class is not part of a template  but the function is

User · Answer

Yes  template member functions are perfectly legal and useful on numerous occasions   The only caveat is that template member functions cannot be virtual

User · Answer

See here  Templates  template methods Member Templates  Member Function Templates  class   Vector     int     array 3      template  lt class TVECTOR2 gt     void  eqAdd TVECTOR2 v2       template  lt class TVECTOR2 gt  void    Vector  eqAdd TVECTOR2 a2      for  int i 0   i  lt  3    i  array i     a2 i

User · Answer

The easiest way is to put the declaration and definition in the same file  but it may cause over-sized excutable file  E g   class Foo   public  template  lt typename T gt  void some method T t              Also  it is possible to put template definition in the separate files  i e  to put them in  cpp and  h files  All you need to do is to explicitly include the template instantiation to the  cpp files  E g       h file class Foo   public  template  lt typename T gt  void some method T t          cpp file       template  lt typename T gt  void Foo  some method T t                  template void Foo  some method lt int gt  int   template void Foo  some method lt double gt  double

User · Answer

Your guess is the correct one   The only thing you have to remember is that the member function template definition  in addition to the declaration  should be in the header file  not the cpp  though it does not have to be in the body of the class declaration itself

[c++] How to create a template function within a class? (C++)

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