On Thursday, 1 September 2016 at 21:07:36 UTC, Steven
Schveighoffer wrote:
On 9/1/16 4:38 PM, Yuxuan Shui wrote:
[...]
Referring to a null object is not a problem. Your program
crashes ungracefully, but does not corrupt memory. However, in
either approach, it can easily end up being a dangling pointer.
But to refer to a null location is quite easy:
int *foo; // null ptr
auto a = x(*foo);
assert(&a.xa() == null);
Your approach is less desirable because of the closure to point
at a given reference which can be had with just a reference.
Needless allocation.
-Steve
Makes sense. Thanks!
