C++ template specialization of constructor

Question

I have a templated class A and two typedefs A and A. How do I override the constructor for A ? The following does not wor

Answer 1

The best solution I've been able to come up with for this situation is to use a "constructor helper function":

template  class A;
typedef  A one_type;
typedef  A second_type;

template 
class A {
private:
  void cons_helper(int m) {test= (m>M);}
public:
  A(int m) { cons_helper(m); }

  bool test;
};

template <>
void one_type::cons_helper(int) { cerr << "One type" << endl;}