Comments on: We should always use Actionscript’s "this" keyword

By: xixixao

xixixao — Thu, 28 Oct 2010 13:44:39 +0000

Neither of those, I use THIS only inside of a constructor, for assigning a value to an attribute of the same name as the parameter.
1) never had problem with differentiating static and dynamic attributes
2) that is evident from the scope and avoid using the same names outside of constructor
3) -> FlashDevelop – ctrl+space brings up the hints, no need for this
4) I dont use underscore though, it is very ugly, not easily readable, usually people who transferred from AS2 use it – I use proper variable names

By: David J McClelland

David J McClelland — Wed, 08 Sep 2010 20:46:24 +0000

I don’t use “this” keyword in as3. I don’t use Flash Builder so the code hinting part is not a bonus.

I set up my class vars in the class definition where they are completely obvious by where they are located.

static vars must be declared static, no confusion there.

local vars are inside a function and scope is determined by location.

I do use an underscore prefix when I pass in an argument to a function and then assign it to class scope. If I didn’t do that I would use this.sameName = sameName. But within the function I want to make sure I am using the class scoped var, and it is much easier to type _sameName than wonder if I should type “this.” in front of a var or not.

My 2

By: Seando

Seando — Thu, 29 Jul 2010 22:58:32 +0000

be aware using the this keyword in inline item renderer’s or in anonymous functions. The this keyword will do the opposite in the above examples. this.myVar will refer to the argument and myVar will refer to the outer scoped class variable.

By: me

me — Tue, 11 May 2010 03:30:59 +0000

Thanx for the book reference.
I found it, I am reading it these days.

By: Davide Zanotti

Davide Zanotti — Fri, 07 May 2010 16:33:12 +0000

First of all, I suggest you the excellent book “Essential Actionscript 3″: http://www.amazon.com/Essential-ActionScript-3-0-Colin-Moock/dp/0596526946/ref=sr_1_2?ie=UTF8&s=books&qid=1273249748&sr=1-2

anyway:

instance: an object created from a class constructor (ie: instance = new Class())

method: a function related to a specific class and attached to the instance (ie: instance.method())