Extract C++ template parameters

Question

Although I\'m doubtful, I\'m curious as to whether it\'s possible to extract primitive-type template parameters from an existing type, perhaps using RTTI.

For exampl

Answer 1

In the case of std::bitset, you can just use the size() member function:

size_t sz = oh_my_word.size();  // sz is now 16

In the general case, you can define a member function which returns the size in a similar manner:

template 
class Foo
{
public:
  int size() const { return N; }
};