On Wed, 2008-04-09 at 16:20 -0400, Michel Salim wrote:
> On Tue, Apr 8, 2008 at 1:07 PM, Jürg Billeter <[EMAIL PROTECTED]> wrote:
>
> > Short example:
> >
> > public void foo (Bar bar) {
> > // bar is expected to be non-null
> > // will be enforced at run-time in future Vala versions
> > }
> >
> > public void foo (Bar? bar) {
> > // bar is allowed to be null
> > }
> >
> > Any questions or comments about this?
> >
> Presumably a compile-time check is also performed on return values? e.g.
>
> public Bar foo () {
> return null;
> }
>
> should fail.
Yes, that will be the case.
> What if the nullity of the value cannot be determined at compile time?
> Enforce that the return type must have '?' ?
The compiler will report a warning. If you're sure that it'll always be
non-null, you can add an explicit cast or assert to avoid the warning.
We'll only enable the warnings by default when we have a sensible
non-null analysis and we'll probably also add an option to disable the
warnings.
Jürg
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