Reflection (shorthand) analysis in AS3 _flash AS3

Class Name: Passes an object, returns the full name of the class

var loader:urlloader = new Urlloader ();
var classname:string = getqualifiedclassname (loader);
Trace (ClassName); Displays Flash.net.URLLoader

Class name of the parent class: Passing an object, returning the class name of the parent class

var loader:urlloader = new Urlloader ();
var classname:string = getqualifiedsuperclassname (loader);
Trace (ClassName); Displays Flash.events.EventDispatcher

Class by class name

var classreference:class = Class (Getdefinitionbyname ("Flash.net.URLLoader"));
Once you've got a reference to the class, you can do it.
var instance:object = new Classreference ();

Examples of getqualifiedclassname () or getqualifiedsuperclassname () in combination with Getdefinitionbyname ():

var loader:urlloader = new Urlloader ();
var classname:string = getqualifiedclassname (loader);
var classreference:class = Class (Getdefinitionbyname (className));
var instance:object = new Classreference ();

Introspection:describetype () returns the type description of the object

For example:

var loader:urlloader = new Urlloader ();
var description:xml = describetype (loader);
Trace (description);

Output:

<type name= "Flash.net::urlloader" base= "Flash.events::eventdispatcher"
Isdynamic= "false" Isfinal= "false" isstatic= "false" >
<metadata name= "Event" >
<arg key= "name" value= "Httpstatus"/>
<arg key= "type" value= "Flash.events.HTTPStatusEvent"/>
</metadata>
<metadata name= "Event" >
<arg key= "name" value= "Securityerror"/>
<arg key= "type" value= "Flash.events.SecurityErrorEvent"/>
</metadata>
<metadata name= "Event" >
<arg key= "name" value= "IOError"/>
<arg key= "type" value= "Flash.events.IOErrorEvent"/>
</metadata>
<metadata name= "Event" >
<arg key= "name" value= "Progress"/>
<arg key= "type" value= "Flash.events.ProgressEvent"/>
</metadata>
<metadata name= "Event" >
<arg key= "name" value= "complete"/>
<arg key= "type" value= "Flash.events.Event"/>
</metadata>
<metadata name= "Event" >
<arg key= "name" value= "open"/>
<arg key= "type" value= "Flash.events.Event"/>
</metadata>
<extendsclass type= "Flash.events::eventdispatcher"/>
<extendsclass type= "Object"/>
<implementsinterface type= "Flash.events::ieventdispatcher"/>
<constructor>
<parameter index= "1" type= "Flash.net::urlrequest" optional= "true"/>
</constructor>
<variable name= "bytestotal" type= "uint"/>
<variable name= "Data" type= "*"/>
<method name= "Load" declaredby= "Flash.net::urlloader" returntype= "void" >
<parameter index= "1" type= "Flash.net::urlrequest" optional= "false"/>
</method>
<method name= "Close" declaredby= "Flash.net::urlloader" returntype= "void"/>
<variable name= "DataFormat" type= "String"/>
<variable name= "bytesloaded" type= "uint"/>
<method name= "dispatchevent" declaredby= "Flash.events::eventdispatcher"
Returntype= "Boolean" >
<parameter index= "1" type= "Flash.events::event" optional= "false"/>
</method>
<method name= "toString" declaredby= "Flash.events::eventdispatcher"
Returntype= "String"/>