Since you're looping through the parent's children, not all children might be
LiquidObject instances.
Which is why it works when you check if it "is" a LiquidObject
if (parent.getChildAt(i) is LiquidObject)
The following will indeed work, because casting like that is allowed:
if (parent.getChildAt(i) is LiquidObject) {
trace(LiquidObject(parent.getChildAt(i)));
}
However using the "as" operator is better practice, because you can't always
cast usting "Class()" as Darren explains in his
article. For instance Array(myArray) will actually try to create a new Array
instead of casting it..
So in this case it is just a "better practice approach":
if (parent.getChildAt(i) is LiquidObject) {
trace((parent.getChildAt(i) as LiquidObject));
}
note: you don't really need to cast it to just "trace()" the object, but I
guess you're actually trying to do something with the
retrieved instance, in which case you have to:
(parent.getChildAt(i) as LiquidObject).doSomethingLiquidObjectSpecific();
regards,
Muzak
----- Original Message -----
From: "Paul Chang" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, June 21, 2007 7:42 PM
Subject: Re: [Flashcoders] Type Coercion Failed: Odd behavior.
> Thanks for this reference. I performed a simple test and it works.
>
> However, for my particular example, I receive an error.
>
> var liquidObject:LiquidObject = parent.getChildAt(i) as LiquidObject;
>
> assigns null to liquidObject.
>
> The only thing that has worked for me so far is:
>
> if (parent.getChildAt(i) is LiquidObject) {
> trace(LiquidObject(parent.getChildAt(i)));
> }
>
> My only explanation is that I'm attempting to perform this cast WITHIN the
> LiquidObject class itself.
>
> I currently have the stated workaround, but any further insights would be of
> interest to me.
>
> Best,
> Paul
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