CoffeeScript Supports Literate Programming
CoffeeScript Supports Literate Programming
Written by Alex Denham   
Wednesday, 27 February 2013

The latest release of CoffeeScript has a new ‘literate’ mode to make it easier to develop Markdown documents that are executable.

CoffeeScript is a small language that compiles into the equivalent JavaScript with no interpretation at runtime.

It is described by the developers as an attempt to expose the good parts of JavaScript in a simple way. You can use any existing JavaScript library seamlessly from CoffeeScript, and the compiled output remains readable, passes through JavaScript Lint without warnings, will work in every JavaScript runtime, and tends to run as fast or faster than the equivalent handwritten JavaScript.

The ‘Literate Programming’ mode is optional, and is used to make code more readable. If a file is marked as ‘.litcoffee’. then when the compiler is compiling it to JavaScript, anything that isn't indented is discarded, and only the indented text is compiled.

This means that Markdown code results in an output file that can be completely compiled, because in Markdown indenting is used to denote source code. Markdown is a text-to-HTML conversion tool for web writers. It allows you to write in plain text format, then convert it to structurally valid XHTML (or HTML).

 

 

The output can also be used to create formatted documents, and can be displayed in editors with syntax highlighting. The announcement about the new feature on the CoffeeScript website says that as 1.5.0 is the first version of CoffeeScript that supports literate programming, they’d like to know if you have any ideas for improving the feature.

The other main changes to the new version are a move to the Node.js Read-eval-print-loop (REPL) format, support for negative loop counters to work through arrays backwards, and disallowing the return of values from constructors.

Banner


Perl 5.22.0 Released
08/06/2015

The latest version of Perl has been released with a new double diamond operator, support for hexadecimal floating point numbers, and improved variable aliasing.



Windows 10 To Be Released On July 29
02/06/2015

So soon! The real question is not are we ready for it but is it ready for us? The phone version certainly isn't ready and neither are the developer tools we needed weeks ago.


More News

Last Updated ( Wednesday, 27 February 2013 )
 
 

   
RSS feed of news items only
I Programmer News
Copyright © 2015 i-programmer.info. All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.