Correct me if I'm wrong, but it looks like your rationale is entirely based on an argument name being identical to a class variable name. I might be looking at this too simply, but shouldn't you just use a different argument name if it clashes with a class variable name?
-Steven > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:flashcoders- > [EMAIL PROTECTED] On Behalf Of JOR > Sent: Tuesday, October 10, 2006 1:19 PM > To: Flashcoders mailing list > Subject: Re: [Flashcoders] Moving to AS2, array always undefined > > Actually, the "need" is dependent on the implementation. > > It was my understanding that AS first looks to the local scope for the > existence of a variable then works up to find it. By using "this" you > were explicitly telling flash that the var isn't local to the function > but rather belongs to the object cutting out a step for the VM. > > Therefore, something like the following becomes possible and the use of > "this" becomes necessary: > > class MyConstructor { > private var target:MovieClip; > public function MyConstructor (target:MovieClip) { > this.target = target; > } > } > > Because you can not do this: > > class MyConstructor { > private var target:MovieClip; > public function MyConstructor (target:MovieClip) { > target = target; // ? > } > } > > However, depending on your naming conventions you "might" not have to > use "this" if you did something like the following: > > class MyConstructor { > private var _target:MovieClip; > public function MyConstructor (target:MovieClip) { > _target = target; > } > } > > Even still, I think the VM might check for the existence of a var named > _target local to the constructor function before locating the object's > field named _target. > > It's been a while since I've done anything in AS1 so I may be way off > here but I thought I remembered "this" being necessary because at weird > times the VM would think you were trying to instantiate a local var if > you didn't use "this". Particularly in "on (something)" event handlers. > Maybe I'm thinking of _global, or perhaps both. This, I'm not sure > about... if you'll excuse the pun. :) _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
