D - Unsafe and doomed

[deadalnix]

On Saturday, 4 January 2014 at 20:16:29 UTC, Walter Bright wrote:
> On 1/4/2014 11:41 AM, bearophile wrote:
>> If you write an IDE in D language you wish to avoid this 
>> situation :-)
>
> If you write an IDE in any language, you wish to avoid having 
> bugs in it. I know that non-NULL was popularized by that 
> billion dollar mistake article, but step back a moment.
>
> Non-NULL is really only a particular case of having a type with 
> a constrained set of values. It isn't all that special.

If you step back one step further, you'll notice that having a 
nullable type may be desirable for almost anything, not only 
classes/pointers.