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A comment on Rails 3.1 shipping with CoffeeScript. Parent comment

Re:Rails 3.1 shipping with CoffeeScript by ez77 on Wednesday April 13, 2011 @05:08PM (#2444197)
Just out of curiosity, do you use CoffeeScript for all your underscore.js and bakckbone.js development?
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Re:Rails 3.1 shipping with CoffeeScript by jashkenas on Wednesday April 13, 2011 @05:22PM (#2444273)
Nope. Both of those are JavaScript libraries aimed towards widespread adoption by JavaScript users, and therefore aren't written in CoffeeScript.

That said, I did port Underscore.js to CoffeeScript once, and the resulting compiled JS ran (a little bit) faster than the original version.

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Re:Rails 3.1 shipping with CoffeeScript by detst on Wednesday April 13, 2011 @06:23PM (#2444497)
Why does that stop you from writing them in CoffeeScript, especially if it's faster? Because you want contributions back to the projects from JS-only developers?
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Re:Rails 3.1 shipping with CoffeeScript by jashkenas on Wednesday April 13, 2011 @07:13PM (#2444646)
Yep. I'm a pragmatist at heart. I don't think that either Underscore.js or Backbone.js would have gotten the same sort of adoption they've seen (eg. github.com/popular/watched) if they had been written in CoffeeScript. Perhaps in a year or two it would be different.
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