How to determine one class is a dynamic one or not?

Question

hello,i got a simple question,like the title says.
how to determine one class is a dynamic one or not?
finally,i got an indirect solution.
package {
public dynamic class MyClass extends MySuperClass
public function MyClass()
super();
this.isDynamic=true;
this is a simple dynamic class,i defined a varible
directly,it is ok with dynamic class though i didn't declare it.
then in another class(parent class of this dynamic
class),where i try to determine the instance of this dynamic class
is a dynamic one or not.
i will use one function "checkIsDynamic" to check that
varible is exsit or not.then it will help me to determine what i
want know.
protected function checkIsDynamic():Boolean
try{this["isDynamic"]}
catch(er)
return false;
return true;
if another child class of MySuperClass didn't defined this
property,i can affirm it is not a dynamic class,or vice versa
this function also can be expanded to another one:
protected function checkProperty(prop:String):Boolean
try{this[prop]}
catch(er)
return false;
return true;
it is an useful solution,defined in parent class,and to check
the property is exist or not in child class.

Answer 1

try adding a property to a class instance.