Io

Io is a small prototype-based programming language. The ideas in Io are mostly inspired by Smalltalk (all values are objects) and Act1, Self, and NewtonScript (actors and futures, differential protos, inheritance by delegation). 

Features:
-  small (~12K lines)
-  pure object language
-  reasonably fast (comparable to Python, Perl, Ruby)
-  differential prototype-based object model
-  untyped
-  incremental garbage collection
-  exceptions
-  ANSI C implementation (except for inline directive)
-  embeddable
-  multi-state (multiple independent VMs can run in the same application)
-  coroutines (light wieght threads)

Last updated 18 Jul, 2005


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BSD_3Clause

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Versions

2005-07-14

2005-07-14 devel released 2005-07-14

  • Released: 6 Jun, 2003
  • Code Maturity: Stable
2003-06-06

2003-06-06 stable released 2003-06-06

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User manual available in HTML format from http://www.iolanguage.com/Source/release/Io/Docs.html

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Please send comments on these web pages to bug-directory@fsf.org, send other questions to info@fsf.org.

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