On Thursday, 20 August 2015 at 19:54:22 UTC, Steven Schveighoffer
wrote:
On 8/20/15 3:41 PM, Jonathan M Davis wrote:
On Thursday, 20 August 2015 at 17:50:11 UTC, Steven
Schveighoffer wrote:
if(arr != null)
Definitely don't do that. IMHO, "== null and "!= null" should
be
illegal. If you really want to check for null, then you need
to use "is
null" or "!is null", whereas if you want to check that an
array is
empty, check its length or call empty. By using "== null" or
"!= null",
you tend to give the false impression that you're checking
whether the
object or array is null - which is not what you're actually
doing.
On the contrary, checking if it's equal to null checks to see
if it has the same elements as null. That's exactly what I
would want.
And why would you want that? The length is meaningless if the
pointer is null. It shouldn't even be possible for the length to
be anything other than zero if the pointer is null.
- Jonathan M Davis
