dynamic classes and duck typing
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Mon Nov 30 21:36:02 PST 2009
Bill Baxter wrote:
> On Mon, Nov 30, 2009 at 7:12 PM, Walter Bright
> <newshound1 at digitalmars.com> wrote:
>> Bill Baxter wrote:
>>> So we can overload on @property-ness?
>> No.
>>
>>> I.e. this works
>>>
>>> struct S
>>> {
>>> @property
>>> float x() { return 1.0f; }
>>> float x() { return 2.0f; }
>>> }
>>>
>>> void main()
>>> {
>>> S s;
>>> writefln("%s", s.x); // writes 1.0
>>> writefln("%s", s.x()); // writes 2.0
>>> }
>> That just looks wrong.
>>
>
> Ok, so you can't have both dynamic properties and dynamic methods with
> this. One or the other, your pick.
> Seems like an unfortunate limitation.
>
> --bb
It's a limitation similar to not having a field and a method share the
same name. It avoids a number of awkward questions such as figuring the
meaning of &s.x.
Andrei
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