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Machine Learning Authors: Pat Romanski, Yeshim Deniz, Liz McMillan, Elizabeth White, Corey Roth

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On Leaky Abstractions and Objective-J

In a recent post by John Resig, and in many of the comments, there seems to be the mistaken belief that Objective-J was designed to allow existing Objective-C programmers to write code that runs on the web. It’s been compared to GWT, where developers program almost exclusively in Java and are allowed “circumvent” JavaScript. This however is not the case with Objective-J at all. For starters, Objective-J is simply a language addition to JavaScript, and exists separately from the actual Cappuccino framework (which I’ll discuss a little later). It does not directly have anything to do with the DOM or AJAX, etc. The purpose behind Objective-J was to facilitate the development of Cappuccino, and when we originally set out to do that we simply wanted to add a few key missing features to the existing JavaScript “standard”. In other words, Objective-J is our take on JavaScript 2.0.

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