I think directly calling an event handler (meaning, you also have code call it, 
it doesn't just fire automatically from an event) and passing it a null 
argument is bad architecture.  I think the preferred way would be to create a 
separate function to handle logic as per my examples, and keep event handlers 
as event handlers. Otherwise, you're making an event handler also a "normal" 
function.  You certainly can have, and often should have, logic within the 
event handler, but if you also want that logic to be run from a non-event (like 
calling it with code), then you should have a separate function for that logic. 

 Jason Merrill
 Instructional Technology Architect
 Bank of America  Global Learning 





_______________________

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Wenzler, Thomas
Sent: Monday, December 20, 2010 4:27 AM
To: [email protected]
Subject: [Flashcoders] Re: error msg

Jason,
Is that considered bad practice in lieu of code readability or is there another 
pitfall I just don't see?
I'm only asking because in my short past of writing AS3 I called Event Handlers 
with an argument of 'null' sometimes to save on function single-liners like 
doIt(); 

Best
Thomas


------------------------------

Message: 9
Date: Thu, 16 Dec 2010 19:48:16 -0500
From: "Merrill, Jason" <[email protected]>
Subject: RE: [Flashcoders] error mesg
To: Flash Coders List <[email protected]>
Message-ID:
        <[email protected]>
Content-Type: text/plain; CHARSET=US-ASCII

You shouldn't be manually calling an event handler in your code.  If you want 
multiple event handler functions to run the same set of code, then create a 
third function that they all call.  

function onSomething(event:Event):void
{
        doIt();
}

function onSomethingElse(event:Event)
{
        doIt();
}

function doIt():void
{
        //doStuff.
}


 Jason Merrill
 Instructional Technology Architect
 Bank of America  Global Learning 





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