array !is null fails

[BCS]

Reply to Jarrett,

> "BCS" <ao at pathlink.com> wrote in message
> news:ce0a334373d48c91d12a1b9c0ec at news.digitalmars.com...
> 
>> Ah... I though that [i..i].length == 1?
>> 
> Nope, since the second index is noninclusive, [i..i + 1] will be one
> element (just i), and [i..i] is 0.

Oh, Duh. And I've had to correct others on that one  :b

> 
>> What good is the (array !is null) if it doesn't tell you when the
>> pointer is null?
>> 
> Well if you want to see if the pointer is null then use "if(array.ptr
> is null)".  Though I'll agree with you that the discontinuity between
> zero-length null pointer arrays and more-than-zero-length null pointer
> arrays is a bit odd.
> 

What else could be null? I don't see anything else that it could mean other 
than "is the pointer null".