Is it possible to store properties via opDispatch using tuples?
H. S. Teoh
hsteoh at quickfur.ath.cx
Fri Jan 17 13:14:54 PST 2014
On Fri, Jan 17, 2014 at 09:08:50PM +0100, Jacob Carlborg wrote:
> On 2014-01-17 18:49, H. S. Teoh wrote:
>
> >Now I'm not sure if Variant allows assignment to a static type, but
> >in theory this should be possible:
> >
> > // assume d.abc returns a Variant
> > int x = d.abc; // will assert if d.abc doesn't hold an int at runtime
>
> It doesn't work. Variant doesn't retain the static type, which is
> needed in this case.
[...]
Is that because D doesn't have implicit casting via opCast? -- because,
conceivably, if
x = d.abc;
gets lowered to
x = d.opCast!(typeof(x))(d.abc);
then the above can be made to work.
T
--
If you look at a thing nine hundred and ninety-nine times, you are perfectly safe; if you look at it the thousandth time, you are in frightful danger of seeing it for the first time. -- G. K. Chesterton
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