Sam Wilson píše v Čt 25. 02. 2010 v 21:43 -0500:
> On Fri, 2010-02-26 at 00:43 +0100, Jiří Zárevúcky wrote:
> >
> > Here's a little trick you might like:
> >
> > [code]
> >
> > errordomain MyError {
> > FAILED;
> > }
> >
> > T throwerror<T> (string str) throws Error {
> > throw new MyError.FAILED (str);
> > }
> >
> > int func ()
> > {
> > int? i = null;
> > int j = i ?? throwerror<int> ("hello");
> > return j;
> > }
> >
> > [/code]
> >
>
> Looks great, but I can't get it to compile with experimental non null
> since the ?? operator is returning an 'int?'
> That's a bug. ?? should have the second operand's type. > IMHO, as nice as this solution is, it seems a bit hackish for a language > that claims to support non-null types. Remember that non-null checking is experimental. That means it's not supposed to be complete and bug-free at this point. > Overall, Vala provides very few > features that make N.N. types more attractive compared to regular types > and personally I find them a pain to work with > Nobody's forcing you. It's an experimental feature you need to explicitly turn on. You have chosen to do so, you must bear the consequences - bugzilla awaits you :-P
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