Category:CoffeeScript
This programming language may be used to instruct a computer to perform a task.
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This page uses content from Wikipedia. The original article was at CoffeeScript. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance) |
CoffeeScript is a programming language that compiles to JavaScript. The language adds syntactic sugar inspired by Ruby and Python to enhance JavaScript's brevity and readability, as well as adding more sophisticated features like array comprehension and pattern matching.
With 4000+ watchers and 300+ forks (as of December 2011), CoffeeScript is ranked as one of the "most interesting" projects on Github. [1] The language has a relatively large following in the Ruby community, and has been used in production by 37signals. Ruby on Rails began to include CoffeeScript in its asset pipeline in Rails version 3.1 (see [2]).
History
On December 13, 2009, Jeremy Ashkenas made the first git commit of CoffeeScript with the comment: "Initial commit of the mystery language." The compiler was written in Ruby. On December 24th, he made the first tagged and documented release, 0.1.0. On February 21, 2010, he committed version 0.5, which replaced the Ruby compiler with one written in pure CoffeeScript. By that time the project had attracted several other contributors on Github, and was receiving over 300 page hits per day.
On December 24, 2010, Ashkenas announced the release of stable 1.0.0.
Examples
A common JavaScript snippet using the jQuery library is
$(document).ready(function() {
// Initialization code goes here
});
or even shorter,
$(function() {
// Initialization code goes here
});
In CoffeeScript, the function
keyword is replaced by the ->
symbol, and indentation is used instead of curly braces (except when defining an associative array), as in Python. Also, parentheses can usually be omitted. Thus, the CoffeeScript equivalent of the snippet above is
$(document).ready ->
# Initialization code goes here
or
$ ->
# Initialization code goes here
Compiling
The CoffeeScript compiler has been written in CoffeeScript since version 0.5, and can be run either in the browser or through Node.js. The official site at CoffeeScript.org has a "Try CoffeeScript" button in the menu bar; clicking it opens a modal window in which you can enter CoffeeScript, see the JavaScript output, and run it directly in the browser.
Citations
- Github. "Interesting Repositories", Github, Nov 10, 2010.
- Carson, Ryan. "New Rails-like Framework from 37signals for HTML5 Mobile Apps", Think Vitamin blog, Nov 8, 2010.
- Hagenburger, Nico. "Rails 3.1 – A Sneak Preview", presentation for Railscamp Hamburg on Oct 23, 2010.
- Ashkenas, Jeremy. "The Plan for 1.0", Github issue tracker, Nov 4, 2010.
External links
- GitHub repository
- @CoffeeScript - Twitter feed
- Wikipedia Entry
Subcategories
This category has the following 3 subcategories, out of 3 total.
@
- CoffeeScript Implementations (empty)
- CoffeeScript User (13 P)
Pages in category "CoffeeScript"
The following 200 pages are in this category, out of 219 total.
(previous page) (next page)A
- A+B
- ABC problem
- Accumulator factory
- Ackermann function
- Add a variable to a class instance at runtime
- AKS test for primes
- Align columns
- Anagrams
- Anagrams/Deranged anagrams
- Anonymous recursion
- Apply a callback to an array
- Arithmetic/Complex
- Array concatenation
- Arrays
- Associative array/Iteration
- Averages/Arithmetic mean
- Averages/Mode
- Averages/Pythagorean means
- Averages/Root mean square
- Averages/Simple moving average
B
C
- Caesar cipher
- Call a function
- Call an object method
- Case-sensitivity of identifiers
- Character codes
- Chat server
- Check that file exists
- Chemical calculator
- Chinese remainder theorem
- Classes
- Closures/Value capture
- Combinations
- Combinations with repetitions
- Comma quibbling
- Command-line arguments
- Comments
- Compound data type
- Concurrent computing
- Conditional structures
- Constrained random points on a circle
- Continued fraction
- Count in factors
- Count in octal
- Count occurrences of a substring
- CRC-32
- Create an HTML table
- CSV to HTML translation
- Cumulative standard deviation
E
F
G
H
- Hailstone sequence
- Hamming numbers
- Happy numbers
- Hash from two arrays
- Haversine formula
- Hello world/Graphical
- Hello world/Newline omission
- Hello world/Standard error
- Hello world/Text
- Here document
- Heronian triangles
- Higher-order functions
- Hofstadter Figure-Figure sequences
- Hofstadter Q sequence
- Horner's rule for polynomial evaluation
- Hostname
- Huffman coding
L
M
P
R
S
- S-expressions
- Sequence of non-squares
- Set
- Show the epoch
- Sorting Algorithms/Circle Sort
- Sorting algorithms/Heapsort
- Sorting algorithms/Merge sort
- Sorting algorithms/Permutation sort
- Sorting algorithms/Quicksort
- Sorting algorithms/Sleep sort
- Spiral matrix
- Stable marriage problem
- Stack
- Statistics/Basic
- String append