RE: [flexcoders] polymorphic interfaces

Mon, 06 Mar 2006 18:29:44 -0800

What problem are you having with clone()? Here's a sample of how we override it in ListEvent, and it doesn't require any coercion.

 

    override public function clone():Event

    {

        return new ListEvent(type, bubbles, cancelable, columnIndex, rowIndex, reason, itemRenderer);

    }

 

Are you calling clone() yourself? If so, why? It's intended to be called indirectly by the Player when you re-dispatch an event; i.e. you call dispatchEvent() on an Event instance which has already been dispatched and which you are handling. In this case, a clone of the original event is redispatched.

 

- Gordon

 

From: [email protected] [mailto:[email protected]] On Behalf Of Michael Schmalle
Sent: Monday, March 06, 2006 2:34 PM
To: [email protected]
Subject: Re: [flexcoders] polymorphic interfaces

 

Hello,

This is funny becasue I was just having this problem with the Event clone() ! :)

I guess I just slammed it with a coerrsion for now.(Yeah I realize this is not an interface but it's the same idea :: you can't override a return type)

But, yeah, I second this motion for the futrue!

Peace, Mike

On 3/6/06, Gordon Smith <[EMAIL PROTECTED]> wrote:

I think there's general agreement here that we want to do this in a future release, but that the schedule doesn't allow it for this release. There are quite a few other things that people want as well -- strongly-typed array, enums, inner classes, etc. -- but we can't open up the feature set again this late in the cycle (nearly Beta 2).

 

- Gordon

 

From: [email protected] [mailto:[email protected]] On Behalf Of Johannes Nel
Sent: Monday, March 06, 2006 1:12 PM
To: [email protected]
Subject: [flexcoders] polymorphic interfaces

 

hi all, especially Adobe dudes working on ze language.

the fact that method signatures are not polymorphic when implementing an interface or overriding a function is a real pain in the .... behind.
now in my interface i have to create a function as such

interface IBla
{

function clone():IBla
}

but two levels down the line when i have extended this interface with another i want my clone to return a more concrete type, and then each of my classes that implement this interface their clone methods would ideally return their own type.

yet all these classes implement IBla in some fashion either directly or indirectly so... anyway polymorphic function signatures would be nice.

thanks
johan
--

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