Another template question

[grscot]

Dear all,

I 've understood that the template function for the two functions :
int AddNumbers(int a, int b);
float AddFloats(float a, float b);

is: template<class T>
T Add(const T &a, const T&b)
{
return a+b;
}
because the arguments' return type is the same as the functions' return type.

But what is the template function when the return type of the arguments is different from the return type of the function?
For example:
Member* get_member(Book* book);
Book* get_book(Member* member);

What is now the template function of the two above functions?

Regards,
grscot

 

[chipperMDW]

Huh?

The question doesn't make sense.

And arguments don't have return types.


Are you asking what function template could be used to instantiate those two functions? If so, the answer is &quot;none.&quot; The two functions have different names.

If they had the same name, theoretically, you could have a function template as follows:

  template< class Ret, class Arg >
Ret* get( Arg* );

That could be used to instantiate the two functions, but only if their implementation was exactly identical, which is doubtful.