Pointers, casting, SetGetWindowLong problem...

[torhu]

Bradley Smith wrote:
> I've started recording "surprises" like these on a Web page here: 
> http://www.baysmith.com/d/

That's a good idea, but I see a couple of errors on that page.

At the bottom: "crashes because null not evaluated as false".  null does 
evaluate to false.  The reason it crashes is that assert(obj) doesn't 
check for null, it just calls the class invariant. 
http://www.digitalmars.com/d/class.html#invariants

And "Don't use == to compare with null" can be a bit misleading.  If the 
object has an opEquals defined that takes a reference as an argument, 
you would actually "use == to compare with null".  Maybe if it said 
"Don't use == to check if a reference is null".

But it's a nice initiative nevertheless.  The official docs are a bit 
unclear on many issues.