Hello, Just thought I would try to start a discussion around this ticket (not the exact solution, more just the comments on it):
http://dev.rubyonrails.org/ticket/6650 as, looking back through the list, theres been no discussion here so far (although theres been a fair bit in the comments on the ticket). I think it's really important to do something about this because as it stands Prototype overwrites JS 1.6 methods with incompatible versions. As more browser support these methods and more scripts depend on them its going to be a problem. The main problem is that Array.map and Array.filter take 3 arguments in JS 1.6 (the third one being the scope that the function will run in) but these get overwritten with the Prototype versions which aside from being a fair bit slower don't work in the same way. Firstly, I think its pretty essential that Enumerable is adjusted to take the scope argument (which can default to window for backwards compatibility). It's also, as mentioned in the ticket, really quite useful and a lot nicer looking than function() { ... }.bind(this) which is now the common Prototype idiom (although admittedly there's not a lot in it). Secondly, I really think that in areas like this where optimisation is going to make a big difference to most people's script speeds it's really worth considering how generally worthwhile having the break continue stuff in is compared to allowing browsers to use native versions if need be. Andrew suggests having different versions of methods that support this if you need them which I think is a good idea as in most cases we don't need break (and as mislav says, return does continue). Dean Edwards also mentioned that the try...catches also cause some problems with debugging although I'll need to ask him for the details. I'm not sure how to implement this stuff in a backward compatible way but from my point of view it does need addressing at some point. So what does everyone think? (if you've all already come to a conclusion on this I apologise...please point me to the discussion I missed) Cheers, Dan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype: Core" group. To post to this group, send email to prototype-core@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/prototype-core?hl=en -~----------~----~----~----~------~----~------~--~---
