[flexcoders] Is there an "isset()" in Actionscript 3? (Or an "exists()")

[rigidcode]

If I have an hash (object) like this:

var o:Object = new Object();
o['blahblah'];

How do I test if there exists an o['wwwrgwr']?  

I had a situation where I set something to a string:
o['blahblah']='wefwefw';

and then later tried:

if (o['blahblah']['something']) {

}

and I got:
"Property value not found on String" 

How do I test if there is exists an o['blahblah']['something'] ?

thanks






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