Assigning Interface to Object
Steven Schveighoffer
schveiguy at yahoo.com
Sat Jan 15 09:44:05 PST 2011
On Sat, 15 Jan 2011 11:34:05 -0500, Simen kjaeraas
<simen.kjaras at gmail.com> wrote:
> Mandeep Singh Brar <mandeep at brars.co.in> wrote:
>
>> Hi,
>>
>> I am not able to assign an interface to object. The following code
>> does not compile.
>>
>> module testObj;
>>
>> public interface testInterface {
>> void someMethod();
>> }
>> public class testObj
>> {
>> Object someCaller;
>> this(Object caller) {
>> someCaller = caller;
>> }
>> this(testInterface tI, bool xyz) {
>> someCaller = tI;
>> }
>> }
>>
>> Shouldn't this work?
>
> Nope. D allows interfaces to be special in certain cases (notably COM,
> though other may be added in the future), and this precludes making
> interfaces implicitly castable to Object.
Which unnecessarily complicates things. For example, you can't compare
two interfaces (try it!).
Sorry, had to get my dig in there :P
-Steve
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