On Mon, May 5, 2008 at 7:04 PM, kangax <[EMAIL PROTECTED]> wrote:
>
> Justin,
> there's no need to "wrap" array with $A. Array.prototype is already
Thanks for the tip, I'm paranoid. IE has scarred me. I'll try to
remember that. I usually initialize with this.foo = $A(), so that's
what I was doing in my example.
> I'm not sure why you would want to "compact" a result in first
If you don't do that, then don't you end up with an undefined wherever
an item was pulled out of the array? Such as in my example:
[1,2,3,undefined,5]
I'm getting mixed results in firebug and my ruby coding has trained me
to compact my arrays.
> #without is generally slow when it comes to huge arrays.
Good to know.
> For best performance it's obviously better to stick to native methods:
>
> var arr = [1,2,3,4,5];
> arr.splice(arr.indexOf(4), 1);
> arr; // [1,2,3,5]
I wasn't aware of a splice method. After explaining my problem a
co-worker was talking about splicing and lamented that JavaScript
probably did not support a splice method natively :p
> Regarding your snippet, what about something like:
> // it might sense to use iterator-like "proxy" for filtering
> SomeClass.condition = function(value, index) {
> return index % 2;
> }
>
> var SomeClassManager = {
> trim: function() {
> this.objects = this.objects.reject(SomeClass.condition);
> }
> }
> SomeClassManager.trim();
> SomeClassManager.objects.size(); // 6
Thanks, I think that is what I need.
What I'm doing here is creating a new instance of my class for some
special DOM elements on a page and I want a way to determine if the
element is still in the page, so I have a isOrphaned() method on the
class, and when that method returns true then I call that object's
destroy method and then rip it out of the array.
I was trying to avoid cloning the enumerable, hence the original question.
-justin
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