Accessing a class member in an if statement using std::is_same

Question

I\'m trying to tackle the following problem: I would like to do an if statement that does something depending on whether the argument of a template is a specific ob

Answer 1

void is_string(const std::string& arg) {
  std::cout << arg.length() << std::endl;
}

template 
void is_string(const T& arg) {
  std::cout << "The argument is not a string" << std::endl;
}

Or, see if your compiler supports the C++17 if constexpr.