#include <stdio.h>
template <class T>
struct is_pointer
{
template <class U>
static char is_ptr(U *);
template <class M, class C>
static char is_ptr(M C::*);
template <class U>
static char is_ptr(U(*)());
template<class ...>
static double is_ptr(...);
enum { value = sizeof(is_ptr((T)(0))) == sizeof(char) };
};
template<typename T>
struct has_no_destroy {
template<typename C>
static char test(decltype(&C::no_destroy));
template<typename ...>
static int test(...);
const static bool value = (sizeof(test<T>(0)) == 1);
};
struct Foo {
int bar;
};
void testTypeCheck() {
typedef int * IntPtr;
typedef int Foo::* FooMemberPtr;
typedef int(*FuncPtr)();
printf("%d\n", is_pointer<IntPtr>::value); // prints 1
printf("%d\n", is_pointer<FooMemberPtr>::value); // prints 1
printf("%d\n", is_pointer<FuncPtr>::value); // prints 1
printf("%d\n", is_pointer<int>::value); // prints 0
}
int main()
{
testTypeCheck();
getchar();
}
