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// is_scalar example
#include <iostream>
#include <type_traits>
class A {};
int main() {
std::cout << std::boolalpha;
std::cout << "is_scalar:" << std::endl;
std::cout << "int: " << std::is_scalar<int>::value << std::endl;
std::cout << "A: " << std::is_scalar<A>::value << std::endl;
std::cout << "A&: " << std::is_scalar<A&>::value << std::endl;
std::cout << "A*: " << std::is_scalar<A*>::value << std::endl;
std::cout << "int(int): " << std::is_scalar<int(int)>::value << std::endl;
std::cout << "int(*)(int): " << std::is_scalar<int(*)(int)>::value << std::endl;
return 0;
}
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