D - Unsafe and doomed

[Walter Bright]

On 1/4/2014 1:18 AM, "Ola Fosheim Grøstad" 
<ola.fosheim.grostad+dlang at gmail.com>" wrote:
> I don't disagree, but isn't that just a special case of type constraints? Why
> limit it arbitrarily to null-values, limiting the range of values is useful for
> ints and floats too. If you move the constraint check to the function caller you
> can avoid testing when it isn't needed.

Yes, the non-NULL thing is just one example of a useful constraint one can put 
on types.