"is null" vs "== null"

[Anders F Björklund]

Søren J. Løvborg wrote:

> I find it problematic that comparing null-values with the == operator 
> crashes D programs.

Yes, this is problematic and it has been up for discussion before...

Some old threads, for reference:
2005
	http://www.digitalmars.com/d/archives/digitalmars/D/21225.html
2003
	http://www.digitalmars.com/d/archives/12144.html

But I don't think that the language position on "null" has changed...

A segfault is viewed as an exception, since it throws one on Windows.
And comparing with null is not defined, thus throwing one is OK there.
(Taken freely from http://www.digitalmars.com/drn-bin/wwwnews?D/13854)
It is here being compared to accessing outside of the array, or similar.


> I'd much rather see the == operator extended to deal with null-values.

I've just learned to live with the segfaults, when programming in D. :-(
Fortunately they're pretty easy to track down in the debugger, if found.

--anders