Nu (programming language)

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Nu is an interpreted object-oriented programming language, with a Lisp-like syntax, created by Tim Burks as an alternative scripting language to program OS X through its Cocoa application programming interface (API). Implementations also exist for iPhone and Linux.

The language was first announced at C4,^[1] a conference for indie Mac developers held in August 2007.

This Nu code defines a simple complex numbers class.

(class Complex is NSObject   (ivar (double) real         (double) imaginary)    (- initWithReal:(double) x imaginary:(double) y is     (super init)     (set @real x)     (set @imaginary y)     self)) 

The example is a basic definition of a complex number: it defines the instance variables, and a method to initialize the object. It shows the similarity between the code in Nu and the equivalent in Objective-C; it also shows the similarity with Ruby.

(unless @prefix         (set @prefix               "#{((((NSProcessInfo processInfo) arguments) 0) dirName)}.."))  (unless @icon_files          (set @icon_files               (array "#{@prefix}/share/nu/resources/nu.icns"))) 

This sample, from the nuke tool bundled with Nu, also shows the influence of Objective-C, Lisp, and Ruby in the design of the language.

• F-Script
• MacRuby
• RubyCocoa

• Official website
• Nu - Git repository on GitHub