Hi,
I realize that C++03 will not permit functions to evaluate down to compile-time constants. However, I cannot wait until C++0x for this feature. So, I'm hoping that Boost will allow a temporary solution. Consider the following structure:
static struct nullptr_t
{
template< typename t_type >
operator t_type*() { return 0; }
} nullptr;
The compiler has everything it needs to turn this code into a single integral constant value. So, if I do the following:
int* foo;
if( foo == nullptr )
{
}
Then it should evaluate down to:
int* foo;
if( foo == 0 )
{
}
Is there any way to provide this behavior in Boost? I would like to avoid altering the actual design if possible. Perhaps this actually *does* evaluate to a constant and the problem is that I'm actually unaware of some specific rule that I didn't find in the C++03 standard. Thanks.