Finding out what type a certain interface is

Question

I am creating a method that accepts a IOBJECT parameter. there is multiple class that implement this interface. I need to figure out which type IOBJECT is. how would i go about doing that

Answer 1

You can use typeof, instanceof, or the 'is' operator

Answer 2

It's not ideal, but you can use the "is" operator. Throw it into a switch of if else statment to figure things out.

if(obj is ClassA) {
    //sweetness
} else if (obj is ClassB) {
    //awesomeness
}

typeof will not work, as suggested in the other reply. It will likely return "object" in all cases. instanceof will work though.

Answer 3

You can do getQualifiedClassName() to get the class name of the object. You can also use describeType() which gives you a more complete description of all the methods and properties of the object.

There is information about both here: http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/utils/package.html

It doesn't sound like an ideal situation though. You may want to do something where you can standardize the way you handle all items. For example:

public interface IObject { 
    function doSomething():void;
}

Then...

function myMethod(obj:IObject):void {
    obj.doSomething();
}