On Saturday, 4 January 2014 at 19:05:00 UTC, Walter Bright wrote:
On 1/4/2014 1:18 AM, "Ola Fosheim Grøstad"
<ola.fosheim.grostad+dl...@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.
Yes, exactly. And we have contact programming for this rules, but
DMD doesn't support any contact checks at the compile time. Do
you have any plans to improve the situation? For example, we can
add `static in` and `static out` contacts.
