Re: ANSI string from UNICODE app.
On Wed, 02 Aug 2006 23:18:10 -0700, "Mihai N." <nmihai_year_2000@yahoo.com>
wrote:
I know, I have looked to see how they did it.
My thing was this:
==============================================
#ifdef __cplusplus
#include <assert.h>
template <typename T> struct IsPointer {
inline size_t operator()() { return false; };
};
template <typename T> struct IsPointer<T*> {
inline size_t operator()() { return true; };
};
template <typename T>
inline size_t COUNTOF( const T &t ) {
assert ( !IsPointer<T>()() );
return sizeof(t)/sizeof(t[0]);
}
#else // __cplusplus
#define COUNTOF(a) (sizeof(a)/sizeof(a[0]))
#endif // __cplusplus
==============================================
Here's yet another way that exploits array references, which like the MS
approach, rejects pointers without using assert:
template<typename T, size_t n>
inline size_t ArraySizef(T (&array)[n])
{
return n;
}
One difference between this method (and yours) and the MS approach is the
latter yields a true compile-time constant that can be used (say) in an
array declaration as the array size.
--
Doug Harrison
Visual C++ MVP