The Error class in AS3

top-level

• Error

• ArgumentError
• DefinitionError
• EvalError
• RangeError
• ReferenceError
• SecurityError
• SyntaxError
• TypeError
• URIError
• VerifyError

flash.errors package

• flash.errors.IllegalOperationError
• flash.errors.InvalidSWFError
• flash.errors.IOError
• flash.errors.MemoryError
• flash.errors.ScriptTimeoutError
• flash.errors.StackOverflowError

Note : The flash.events.ErrorEvent is used to dispatch an error in the event flow, if no listener are registered in the dispatcher the event throws a message :

import flash.events.ErrorEvent ;
import flash.events.EventDispatcher ;

var handleError:Function = function( e:ErrorEvent ):void
{
    trace( "handle : " + e ) ;
}

var dispatcher:EventDispatcher = new EventDispatcher() ;

// dispatcher.addEventListener( "test" , handleError ) ; // uncomment this line to test the ErrorEvent normal propagation

dispatcher.dispatchEvent( new ErrorEvent("test", false, false, "hello world" ) ) ;

The Error class in Maashaack

system.errors package

• system.errors.ConcurrencyError:
  The error throws when methods that have detected concurrent modification of an object when such modification is not permissible.
• system.errors.NoSuchElementError:
  Thrown by an Iterator to indicate that there are no more elements in the iteration.