Comments on: The Final Countdown: Screencast Four

By: Allan Ebdrup

Allan Ebdrup — Wed, 03 Feb 2010 07:28:14 +0000

Here my “This is a great thing you can do with boxed types” video http://screenr.com/O4d

By: jdalton

jdalton — Mon, 01 Feb 2010 20:16:15 +0000

Yes Fuseboxed natives work on the iPhone and should work fine on the iPad.

By: Allan Ebdrup

Allan Ebdrup — Sun, 31 Jan 2010 21:48:24 +0000

Do your boxed types work on iPad? mine do

By: Allan Ebdrup

Allan Ebdrup — Wed, 27 Jan 2010 09:56:58 +0000

To bad it’s converted into a primitive, then I can’t use it. And I really need crossbrowser addition of the observer pattern on all changes to my boxed types. Guess I’ll stick with my solution for now. But still. Interesting stuff.

By: Allan Ebdrup

Allan Ebdrup — Tue, 26 Jan 2010 18:54:29 +0000

Really looking forward to it

By: jdalton

jdalton — Tue, 26 Jan 2010 15:26:50 +0000

Yes, myFuseBoxArray[0]++ will work but it will convert the Fuseboxed number to a primitive. Just like var n = new Number(0); n++; typeof n === "number";. As for the events, I don't think there is a cross-browser way to do it, but you can check out MDC docs

By: Allan Ebdrup

Allan Ebdrup — Mon, 25 Jan 2010 18:10:45 +0000

By the way, you can read about some of the stuff I’ve done in my JavaScript framework here:
http://obsurvey.com/UIA.aspx

By: Allan Ebdrup

Allan Ebdrup — Mon, 25 Jan 2010 18:08:28 +0000

”
Yes,
myFuseboxArray[0] = “test”;
works.

I’m sure you could fire an event with proper getter/setter modifications but it wouldn’t be cross-browser.
”

Ok, I’ll keep the questions coming

so if myFuseBoxArray[0] contains a fusebox number I could do

myFuseBoxArray[0]++

And have an event fire in the fusebox number?

By: jdalton

jdalton — Mon, 25 Jan 2010 16:07:55 +0000

Having the correct [[Class]] is important because it allows for popular type detection using {}.toString.call(value).
You can detect the difference between Fuseboxed natives and document natives by looking at their constructor property.

Yes,
myFuseboxArray[0] = "test";
works.

I’m sure you could fire an event with proper getter/setter modifications but it wouldn’t be cross-browser.

I appreciate your questions. Keep them coming

By: Allan Ebdrup

Allan Ebdrup — Mon, 25 Jan 2010 15:15:14 +0000

“The arrays, numbers, strings, and other sandboxed natives are real natives and can be treated like their non-sandboxed counterparts. For example they have the same internal [[Class]] property as natives and things like the array.length property work correctly.”
Sorry for playing the devils advocate again, but:
Actually in my code it’s important that I can distinguish my boxed types from the native ones, so I don’t want them to have the same [[Class]] property. Why is that important?

Also about the length property I just call length() with parenthesis. You have an awfull lot of code just to get the same [[Class]] and avoid putting parenthesis after length.

Can you index a boxed array like a native array:
myFuseboxArray[0] = “test”;
and if so, can you fire an event when an element is set?