(non)nullable types

[Jason House]

Brian wrote:

> On Mon, 09 Feb 2009 04:25:55 +0300, Denis Koroskin wrote:
> 
>> So, let's ask the community: Would you like to see nullable types in D?
>> 
>> http://www.micropoll.com/akira/mpview/539369-138652 (please, don't abuse
>> by voting multiple time)
>> 
>> Explain your reasoning in newsgroups. Thank you.
> 
> i vote yes, i would absolutely love non-nullable types. in some cases i
> even use dummy objects to avoid null checks.

Please, please give us non-nullable types!  Use of a non-nullable reference type before initialization could be an error just like it is in C#.  I hate segfaults and this would at least allow safer code to be written.  Non-nullable types should be implicitly castable to nullable types when making function calls that don't support them.