Boo (programming language): Difference between revisions

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{{Short description|none}}

'''Boo''' is a new ([[2004]]) [[object oriented]] statically [[datatype|typed]] [[programming language]] for the [[Common Language Infrastructure]] with a [[Python programming language|Python]] inspired syntax and a special focus on language and compiler extensibility. Some features of note include [[generator (computer science)|generator]]s, [[multimethods]], optional [[duck typing]], [[macro]]s, true [[Closure (computer science)|closure]]s, [[currying]], and first class functions.

{{More citations needed|date=July 2011}}

{{Infobox programming language

| name = Boo

| logo = [[File:BooLogo.png]]

| paradigm = [[Object-oriented analysis and design|Object oriented]]

| year = {{Start date and age|2003}}

| designer = Rodrigo B. De Oliveira

| developer = Mason Wheeler

| latest_release_version = 0.9.7

| latest_release_date = {{Start date and age|2013|03|25|df=y}}

| typing = [[static typing|static]], [[strong typing|strong]], [[Type inference|inferred]], [[duck typing|duck]]

| implementations =

| dialects a, b = b, a + b =

| influenced_by = [[C Sharp (programming language)|C#]], [[Python (programming language)|Python]]

| influenced = Genie, [[Vala (programming language)|Vala]]

| programming_language = [[C Sharp (programming language)|C#]]

| platform = [[Common Language Infrastructure]] ([[.NET Framework]] & [[Mono (software)|Mono]])/

| license = [[BSD licenses|BSD 3-Clause]]<ref>{{cite web |url=https://github.com/bamboo/boo/blob/master/license.txt |title=license.txt |access-date=August 5, 2015 |website=github.com}}</ref>

| website = {{URL|https://github.com/boo-lang}}

}}

'''Boo''' is an [[Object oriented programming|object-oriented]], [[Type system#Static typing|statically typed]], [[general-purpose programming language]] that seeks to make use of the [[Common Language Infrastructure]]'s support for [[Unicode]], [[I18n|internationalization]], and web applications, while using a [[Python (programming language)|Python]]-inspired syntax<ref>{{cite web |url=http://boo.codehaus.org/BooManifesto.pdf |title=The boo Programming Language |author=Rodrigo Barreto de Oliveira |year=2005 |access-date=February 22, 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090206045607/http://boo.codehaus.org/BooManifesto.pdf |archive-date=February 6, 2009}}</ref> and a special focus on language and compiler extensibility. Some features of note include [[type inference]], [[generator (computer science)|generators]], [[multimethods]], optional [[duck typing]], [[Macro (computer science)|macros]], true [[Closure (computer science)|closures]], [[currying]], and [[first-class function]]s.

Boo is [[open source]] licensed under an MIT/BSD style license.

Boo was one of the three scripting languages for the [[Unity (game engine)|Unity game engine]] ([[Unity Technologies]] employed De Oliveira, its designer), until official support was dropped in 2014 due to the small userbase.<ref>{{cite web |url=https://blogs.unity3d.com/2014/09/03/documentation-unity-scripting-languages-and-you/ |title=Documentation, Unity scripting languages and you |author=aleksandr |date=September 3, 2014 |website=Unity Blogs}}</ref> The Boo Compiler was removed from the engine in 2017.<ref>{{cite web |url=https://blogs.unity3d.com/2017/08/11/unityscripts-long-ride-off-into-the-sunset/ |title=UnityScript's long ride off into the sunset |author=Richard Fine |date=August 11, 2017 |website=Unity Blogs}}</ref> Boo has since been abandoned by De Oliveira, with development being taken over by Mason Wheeler.<ref>{{cite web |url=https://github.com/boo-lang/boo/issues/201 |title=State of Boo · Issue #201 · boo-lang/boo |date=October 2, 2019 |website=GitHub |access-date=January 19, 2023}}</ref>

==Code samples==

Boo is [[free software]] released under the [[BSD licenses|BSD 3-Clause license]]. It is compatible with the [[Microsoft]] [[.NET Framework|.NET]] and [[Mono (software)|Mono]] frameworks.

[[Hello world program]]:

print("Hello, world!")

== Syntax ==

[[Fibonacci series]] generator function:

{{rewrite|2=section|date=May 2023}}

def fib():

a as long, b as long = 0, 1

while true:

yield b

a, b = b, a + b

<syntaxhighlight lang="boo">

Asynchronous design pattern with a closure:

print ("Hello, world!World")

import System

</syntaxhighlight>

def run():

print("executing")

print("started")

result = run.BeginInvoke({ print("called back") })

System.Threading.Thread.Sleep(50ms)

run.EndInvoke(result)

print("done")

<syntaxhighlight lang="boo">

[[Currying]]:

def plus_afib(a as int):

return {a, b as= int | return a + b0L, }1L

# The 'L's make the numbers double word length (typically 64 bits)

while true:

print plus_a(3)(4)

yield b

a as long a, b as long = 0b, 1a + b

# Print the first 5 numbers in the series:

for index as int, element in zip(range(5), fib()):

print("${index+1}: ${element}")

</syntaxhighlight>

==External linksSee also ==

{{Portal|Free and open-source software}}

*[http://boo.codehaus.org/ Boo Homepage]

* [[Fantom (programming language)|Fantom]]

*[http://docs.codehaus.org/pages/listpages-dirview.action?key=BOO boo wiki]

* [[Groovy (programming language)|Apache Groovy]]

* [[IronPython]]

* [[IronRuby]]

* [[Nemerle]]

* [[REBOL]]

* [[StaDyn (programming language)|StaDyn]]

==References==

{{Reflist}}

== External links ==

* [https://github.com/boo-lang/boo Official website]

* [http://jbryankelly.files.wordpress.com/2012/07/thinksciboorev2_hb.pdf How To Think Like a Computer Scientist: Learning to Program with Boo]

* [https://docs.google.com/file/d/0B8oSXKT4_sy7ZERmYnozaFlTY2M/edit?usp=sharing.pdf Boo Succinctly Revealed]

* [https://web.archive.org/web/20140521221019/http://protoman.net/index.php?p=bootorial%2Findex Bootorial]

{{Common Language Infrastructure}}

[[Category:Programming languages]]

[[Category:Imperative.NET programming languages]]

[[Category:Object-orientedBrazilian programming languagesinventions]]

[[Category:Class-based programming languages]]

[[Category:NETFree programmingand languagesopen source compilers]]

[[Category:DynamicallyObject-typedoriented programming languages]]

[[Category:FreeProcedural softwareprogramming languages]]

[[Category:Programming languages created in 2003]]

[[Category:Software using the BSD license]]

[[Category:Statically typed programming languages]]

[[Category:2003 software]]