AS3 - Abstract Classes

Question

How can I make an abstract class in AS3 nicely?

I\'ve tried this:

public class AnAbstractClass
{
    public function toBeImplemented():void
    {
                


        

Answer 1

package 
{
    import flash.errors.IllegalOperationError;
    import flash.utils.getDefinitionByName;
    import flash.utils.getQualifiedClassName;
    import flash.utils.getQualifiedSuperclassName;

    public class AbstractClass 
    {
        public function AbstractClass()
        {
            inspectAbstract();
        }

        private function inspectAbstract():void 
        {
            var className : String = getQualifiedClassName(this);
            if (getDefinitionByName(className) == AbstractClass ) 
            {
                throw new ArgumentError(
                getQualifiedClassName(this) + "Class can not be instantiated.");
            }
        }

        public function foo():void
        {
            throw new IllegalOperationError("Must override Concreate Class"); 
        }
    }
}

---

package
{
    public class ConcreteClass extends AbstractClass
    {
        public function ConcreteClass()
        {
            super();
        }

        override public function foo() : void 
        {
            trace("Implemented");
        }
   }
}