Struct with default ctor (Was: [dmd-beta] dmd 2.064 beta take 2)

[Jonathan M Davis]

On Saturday, May 18, 2013 21:30:57 Walter Bright wrote:
> On 5/18/2013 9:06 PM, Jonathan M Davis wrote:
> > The closest that there is is
> > C++'s references, which aren't rebindable and in many ways act more like
> > aliases than pointers.
> 
> You can trivially create null references in C++:
> 
> int* p = NULL;
> int& r = *p;

Yes, but they're designed with the idea that they're non-nullable. You can't 
assign NULL to them or check if they're NULL. It's just that it's possible to 
make them NULL by the trick that you just showed. Really, it's an example of 
how C++ references are more like aliases than pointers (much as they're 
pointers underneath the hood). All around, they're a bad example of a non-
nullable pointer even though that's kind of what they're supposed to be in 
principle.

- Jonathan M Davis