Will this static_assert ever be triggered?
     template<class Int_T,class Integral,typename Best_Fit<Int_T>::type Min_Range,
                         typename Best_Fit<Int_T>::type Max_Range>
                         auto operator+(Integral left,const Int<Int_T,Min_Range,Max_Range>& right)
                         ->Int<decltype(left + right.get_data())>
                         {
                            static_assert(std::is_integral<Integral>::value,"Non integral type is not allowed.");
                            static_assert(std::is_integral<Int_T>::value,"Non integral type is not allowed.");
                            auto data = left + right.get_data();
                            Int<decltype(left + right.get_data())> result(data);
                            return result;
                         }  
The point is that I don't think that those two static_assert**s** will ever be triggered - even if one tries too.  
So what's the answer to this Q?
Will this static_assert ever be triggered?
===

     template<class Int_T,class Integral,typename Best_Fit<Int_T>::type Min_Range,
                         typename Best_Fit<Int_T>::type Max_Range>
                         auto operator+(Integral left,const Int<Int_T,Min_Range,Max_Range>& right)
                         ->Int<decltype(left + right.get_data())>
                         {
                            static_assert(std::is_integral<Integral>::value,"Non integral type is not allowed.");
                            static_assert(std::is_integral<Int_T>::value,"Non integral type is not allowed.");
                            auto data = left + right.get_data();
                            Int<decltype(left + right.get_data())> result(data);
                            return result;
                         }  
The point is that I don't think that those two static_assert**s** will ever be triggered - even if one tries too.  
So what's the answer to this Q?