#include <iostream>
#include <type_traits>
 
using namespace std;
 
template <class T>
void print_stats( T&& )
{
	std::cout << "-------------------------" << std::endl;	
	std::cout << "is_array=" << std::is_array<T>::value << std::endl;	
	std::cout << "is_const=" << std::is_const<T>::value << std::endl;	
	std::cout << "is_lvalue_reference=" << std::is_lvalue_reference<T>::value << std::endl;	
	std::cout << "is_rvalue_reference=" << std::is_rvalue_reference<T>::value << std::endl;	
}
 
int main() {
	// your code goes here
	std::string x;
	print_stats(x);
 
	print_stats( std::string{} );
 
	std::string y;
	print_stats(std::move(y));
 
	return 0;
}

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