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April 06, 2008 Anonomous class instances | ||||
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I see a lot of this in the DWT examples: new class() Listener { ... } Didn't even know you could do that till I saw it in DWT. But I just now ran across an example like this: new class Listener { ... } Is there a difference? If I had to guess I'd say the first one was creating a no-argument anonymous class template, but I have no idea why you'd want that instead of a regular anonymous class. --bb |
April 06, 2008 Re: Anonomous class instances | ||||
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Posted in reply to Bill Baxter | Bill Baxter schrieb:
> I see a lot of this in the DWT examples:
>
> new class() Listener { ... }
>
> Didn't even know you could do that till I saw it in DWT. But I just now ran across an example like this:
>
> new class Listener { ... }
>
> Is there a difference? If I had to guess I'd say the first one was creating a no-argument anonymous class template, but I have no idea why you'd want that instead of a regular anonymous class.
>
> --bb
I think they are the same. The () is the optional arguments list to the ctor call.
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April 06, 2008 Re: Anonomous class instances | ||||
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Posted in reply to Frank Benoit | On Sun, 06 Apr 2008 19:18:23 +0200, Frank Benoit wrote:
> Bill Baxter schrieb:
>> I see a lot of this in the DWT examples:
>>
>> new class() Listener { ... }
>>
>> Didn't even know you could do that till I saw it in DWT. But I just now ran across an example like this:
>>
>> new class Listener { ... }
>>
>> Is there a difference? If I had to guess I'd say the first one was creating a no-argument anonymous class template, but I have no idea why you'd want that instead of a regular anonymous class.
>>
>> --bb
>
> I think they are the same. The () is the optional arguments list to the
> ctor call.
I thought the '()' were required in D. I think I was getting errors when I removed the parenthesis. Otherwise, it would make sense to drop them.
-JJR
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April 06, 2008 Re: Anonomous class instances | ||||
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Posted in reply to Frank Benoit | Frank Benoit wrote:
> Bill Baxter schrieb:
>> I see a lot of this in the DWT examples:
>>
>> new class() Listener { ... }
>>
>> Didn't even know you could do that till I saw it in DWT. But I just now ran across an example like this:
>>
>> new class Listener { ... }
>>
>> Is there a difference? If I had to guess I'd say the first one was creating a no-argument anonymous class template, but I have no idea why you'd want that instead of a regular anonymous class.
>>
>> --bb
>
> I think they are the same. The () is the optional arguments list to the ctor call.
>
That makes sense. Now that I think about it, there wouldn't be much sense in making a template out of a class that will only ever have one instance.
--bb
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