Squeak Smalltalk programming language

Introduction to Squeak Smalltalk programming language:

The Squeak Smalltalk programming language is a dialect of Smalltalk and is object-oriented, reflective and class-based. It was derived directly from Smalltalk-80. Squeak Smalltalk is a open source and full-featured implementation of the powerful Smalltalk programming language and environment. Squeak is highly-portable - even its virtual machine is written entirely in Smalltalk which makes easy to debug, analyze, and change. It is the vehicle for a wide range of projects from multimedia applications and educational platforms to commercial web application development. The Squeak system includes code for generating a new version of the virtual machine (VM) on which it runs. It includes a VM simulator written in Squeak itself.

Feature of the Squeak Smalltalk programming language:

• Squeak's virtual machine is developed using Squeak itself.
• Squeak are used for Web Application Development.
• Croquet project and Balloon are the examples of Interactive 3D in Squeak!
• It has superb multi-media potential.
• Squeak is internationalised.
• Squeak is a persistent environment - when you save your image, everything right down to the position of windows and text is saved.
• Squeak itself is an IDE.
• Squeak uses incremental compiling.

Programming Code:

Fibonacci numbers:

     fibonacci: n
    | numbers a b |
    numbers := OrderedCollection new.
    a := 1.
    b := 1.
    [ numbers size < n ] whileTrue: [
	| temp |
	numbers add: a.
	temp := b.
	b := a + b.
	a := temp.
    ].
    ^ numbers.