OO Hello World - Boo

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Hello world in Boo is here as well.

"Boo is a new object oriented statically typed programming language for the Common Language Infrastructure with a python inspired syntax and a special focus on language and compiler extensibility." Taken from: (http://boo.codehaus.org/)


By the way, you can see my previous post here: http://carlosqt.blogspot.com/2010/06/oo-hello-world.html
where I give some details on WHY these "OO Hello World series" samples.

Version 1 (Minimal):

The minimum you need to type to get your program compiled and running.

class Greet: 
 name as string
 def constructor(name as string):
  self.name = name[0].ToString().ToUpper() + name.Substring(1, name.Length - 1)
 def Salute():
  print "Hello, ${name}!"

// Greet the world!
g = Greet("world")
g.Salute()

Version 2 (Verbose):

Explicitly adding instructions and keywords that are optional to the compiler.

namespace GreetProgram
import System

private class Greet: 
 private name as string
 public def constructor(name as string):
  self.name = name[0].ToString().ToUpper() + name.Substring(1, name.Length - 1)
 public def Salute():
  print "Hello, ${self.name}!"

// Greet the world!
public def Main(argv as (string)):
 g = Greet("world")
 g.Salute()

The Program Output:

  

Boo Info:

Boo is an object oriented, statically typed programming language that seeks to make use of the Common Language Infrastructure's support for Unicode, internationalization and web applications, while using a Python-inspired syntax[1] and a special focus on language and compiler extensibility. Some features of note include type inference, generators, multimethods, optional duck typing, macros, true closures, currying, and first-class functions.” Taken from: (http://en.wikipedia.org/wiki/Boo_(programming_language))

Appeared:	2003
Current Version:	0.9.3  (latest version in "Languages" page)
Developed by:	Rodrigo B. De Oliveira
Creator:	Rodrigo B. De Oliveira
Influenced by:	Python (Guido van Rossum)
Predecessor Language
Predecessor Appeared
Predecessor Creator
Runtime Target:	CLR
Latest Framework Target:	3.5
Mono Target:	Yes
Allows Unmanaged Code:	Yes
Source Code Extension:	“.boo”
Keywords:	66
Case Sensitive:	Yes
Free Version Available:	Yes
Open Source:	Yes
Standard:	No
Latest IDE Support:	SharpDevelop 3.2/4.0 (beta) http://www.icsharpcode.net/OpenSource/SD/Download/ MonoDevelop 2.2 http://monodevelop.com/Download
Language Reference:	http://boo.codehaus.org/Language+Guide
Extra Info:	http://en.wikipedia.org/wiki/Boo_(programming_language)