* return arguments.callee;*
Is the key here.
On Fri, Oct 3, 2008 at 12:00 PM, Nathan White <[EMAIL PROTECTED]>wrote:
> I feel comfortable with the internals of mootools for the most part and
> love reading the code. However in 1.2.0 there is a bit of code that
> perplexes me. I donno if I'm missing something or what. I figured I would
> ask for some help or clarification. I will note that in the nightly builds
> this code has been completely replaced with something that seems a bit more
> robust.
>
> In the Core.js file line 103-108
>
> (function(object, methods){
> for (var i = methods.length; i--; i) Native.genericize(object,
> methods[i], true);
> return arguments.callee;
> })
> (Array, ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift',
> 'concat', 'join', 'slice', 'toString', 'valueOf', 'indexOf', 'lastIndexOf'])
> (String, ['charAt', 'charCodeAt', 'concat', 'indexOf', 'lastIndexOf',
> 'match', 'replace', 'search', 'slice', 'split', 'substr', 'substring',
> 'toLowerCase', 'toUpperCase', 'valueOf']);
>
>
> I understand and recognize the anonymous function syntax (function(){})()
> but what I don't get is how the it appears the params are passed twice to
> the same anonymous function. The (Array...) followed by the (String...);
> doesn't makes sense to me. If I take this snippet of code out by itself
> modifying the internal function for generic debugging info it breaks. It
> handles the Array () fine but it gets to the String () and breaks.
>
> I looked above in the code to see if I was missing some other closure but I
> didn't see anything.
>
> Can anyone shed any light on this, and why it works?
>
>
--
Guillermo Rauch
http://devthought.com
