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CoffeeScript is a programming language that transcompiles to JavaScript. The language adds syntactic sugar inspired by Ruby, Python and Haskell to enhance JavaScript's brevity and readability, as well as adding more sophisticated features like array comprehension and pattern matching. CoffeeScript compiles predictably to JavaScript and programs can be written with less code (typically 1/3 fewer lines) with no effect on runtime performance. Let me introduce some cool useful tutorials.

Coffescript. Getting started

CoffeeScript – a new JavaScript based language.

Creating an iOS-like Home Screen with CoffeeScript

Create an iOS-like home screen using CoffeeScript

Coffeescript snippet for accessing Google's URL-shortening service

Coffeescript to generate a short url using Google's Goo.gl service.

Rocking Out With CoffeeScript

Even though CoffeeScript is a new language, you’ll learn it very quickly. You should, since it’s only JavaScript flaunting with some flashy clothes, after all.

Meet CoffeeScript

CoffeeScript is a little language that compiles to JavaScript. It adds useful features and smoother syntax while compiling to clean, readable JavaScript. You can use it anywhere you use JavaScript: in the browser, or on the server with Node.js. Learn it fast with PeepCode’s Meet CoffeeScript tutorial.

How CoffeeScript makes jQuery more fun than ever

A quick look at jQuery + CoffeeScript.

Creating TwitterChimes

See how to build an entire app with CoffeeScript, Node.js, and a few other new-ish technologies.

Using CoffeeScript in Rails and even on Heroku

A very thorough overview from the venerable Dr Nic that’ll be useful for those of you who want to host on Heroku.

10 CoffeeScript One Liners to Impress Your Friends

Modern languages rule. I'm surprised that some of the syntax in these map so closely to Scala, given they're oceans apart.

A Case Against Using CoffeeScript

This article talks about the disadvantages of using coffeescript. You may read it before introducing coffeescript in your project.

You may find useful tools for auto-compiling CofeeScript :

LiveReload

CodeKit