"this" can also be used to refer an instance's member variable explicitly.
Since scoping rules allow for a local variable (in a method) to be named the
same as an instance member variable, "this" is required to differentiate
between the two.
(Sorry about the html mail)
Scott
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of A.Cicak
Sent: Fri 28/10/2005 6:32 PM
To: flashcoders@chattyfig.figleaf.com
Cc:
Subject: [Flashcoders] Re: Newbie AS3 question
Well, I dont agree, "this" keyword refers to current class, so its only
more
typing to include it, and making code less
readable. Only reason keyword "this" exists is if you want to pass
reference
to current object somewhere, in which case
you must use "this". To me using "this" in your code makes you look like
wannabe-programmer, :) But I gues its matter of taste. btw, old VB does
not
have "this" keyword, and if you were reffering to VB(.NET), it is more
OOP
and more complex than AS3, so I gues programmers in VB.NET (if there are
some, since C# is there) are not wannabe-programmers :)
"ryanm" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>> What I don't get is why it needs "this.addChild" instead of just
>> addChild. I've been sick of the keyword "this" for a long time and
have
>> since avoided it in AS2.
>>
>> Any reason that it needs to be back in for AS3?
>>
> Maybe because it's one of the most useful scope references ever
> invented?
>
> The fundamental concept that you seem to miss is that "addChild" is
> meaningless by itself, it is a method of an object (in proper OOP
> development), and if you just say "addChild", who is adding the
child? You
> need a reference. You could do it like this if you like:
>
> class Game extends MovieClip {
> var world:MovieClip;
> var bg:MovieClip;
> function Game(){
> var GameReference:Game = this;
> world = new MovieClip();
>
> GameReference.addChild( world );
>
> bg = new MovieClip();
> world.addChild( bg );
> }
> }
>
> The point is, you shouldn't use functions that aren't attached to
> objects, it's bad form, and it's thoroughlly confusing to people who
later
> have to maintain your code. Besides, it makes you look like one of
those
> wannabe-programmer VB guys. ;-)
>
> ryanm
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>
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