Dynamic Language Roundup: Python's GIL Gets Overhauled but not Removed, Squeak Comes to Android

by Werner Schuster on  Jan 24, 2010 1

The Unladen Swallow project that aims to speed up Python has proposed to be merged into mainstream Python. One of Unladen Swallow's goals was to remove the GIL; a new implementation of Python's GIL by Antoine Pitrou will be fairer and less intrusive on multicore CPUs. Also: Squeak Smalltalk has been ported to Android.

MagLev Ruby VM Now Available, Brings GemStone's Persistence to Ruby

by Werner Schuster on  Nov 21, 2009 2

The long awaited MagLev Ruby implementation, based on GemStone Smalltalk, is now available in a public alpha release. While not quite ready to run Rails, it does support frameworks like Rack and Sinatra. MagLev comes with full support for GemStone's mature distribution and persistence features.

Javascript as Compiler Target: Clamato, GWT Smalltalk, Python, Scheme

by Werner Schuster on  Sep 30, 2009 2

Improved VMs and ubiquity have made Javascript an interesting target for compilers. InfoQ takes a look at a few languages that compile to Javascript: Smalltalks Clamato and GWT Smalltalk, Python with pyjamas and Scheme with Moby-Scheme.

Squeak Smalltalk and Seaside come to the iPhone

by Werner Schuster on  May 26, 2009

Squeak Smalltalk is the latest language to be supported on the iPhone platform. We talked to John M McIntosh who ported Squeak to the iPhone and also released software built with Squeak (and its cleaned up version Pharo) in the AppStore. The applications make use of Squeak, but also use the Seaside web framework for building GUIs.

Data, Context and Interaction : A New Architectural Approach by James O. Coplien and Trygve Reenskau

by Sadek Drobi on  May 08, 2009 8

James O. Coplien and Trygve Reenskaug have recently introduced a new architectural approach to OOP based on Data, Context and Interaction pattern. It should allow capturing user mental model in terms of behavioral requirements, something that classic OOP fails to do. The article, that triggered many reactions and critics, provides insights into DCI using concrete examples to show its advantages.

SABLE, a Smalltalk-Inspired Language for .NET

by Abel Avram on  Apr 21, 2009 2

Keith Robertson, the founder of Kuler Software Tools, has written a Smalltalk-inspired language for the .NET platform called SABLE, a language meant to draw upon the qualities of Smalltalk’s syntax and the benefits of running on CLR.

Interview: Lennart Augustsson on DSLs Written in Haskell

by Abel Avram on  Feb 17, 2009 2

In this interview filmed at QCon SF 2008, Lennart Augustsson talks about writing DSLs in Haskell, presenting the advantages offered by the language. In that context, he talks about embedded DSLs, static and dynamic languages, syntax and semantics, monads and many other related topics.

Interview: Avi Bryant on DabbleDB, Smalltalk and Persistence

by Werner Schuster on  Jul 23, 2008

In this interview from QCon 2008, Avi Bryant talks about his Smalltalk web framework Seaside and DabbleDB. Also: Avi explains how DabbleDB uses Smalltalk images for persistence instead of an RDBMs and how to make Squeak scale.

Interview: Avi Bryant on MagLev and GemStone

by Werner Schuster on  Jun 13, 2008

Avi Bryant talks about working on MagLev, a Ruby implementation built by GemStone. Avi explains the reasons for MagLev, the merits of GemStone's distributed OODB features, and more

MagLev: Gemstone builds Ruby runtime based on Smalltalk VM

by Werner Schuster on  Apr 30, 2008

OODB vendor Gemstone works on a Ruby VM called MagLev. Working with Seaside's and DabbleDB's Avi Bryant, Gemstone bases the Ruby runtime on their Smalltalk VM to offer performance and powerful persistence features. We talked to Avi Bryant and Gemstone's Bob Walker about the technology behind MagLev and the plans for it.

Interview: Wilson Bilkovich Discusses Rubinius

by Werner Schuster on  Feb 20, 2008

Wilson Bilkovich is an Engine Yard employee working as a core Rubinius team member. Wilson discusses various Rubinius systems and how they're implemented, as well as distributed version control systems, the Ruby Hit Squad, RubyGems and more.

How to Develop New Activities for the One Laptop Per Child Project?

by Jean-Jacques Dubray on  Feb 18, 2008 3

The One Laptop Per Child project has starting shipping its first generation of XO laptops. OLPC "is not a laptop project, it is an education project", explains Nicholas Negroponte, director of the project. A full Sugar based development environment is available for developers to contribute new activities to the project. Sugar supports collaborative activities when XOs are meshed together.

Inside the full speed Rubinius debugger

by Werner Schuster on  Jan 23, 2008

Debugging Ruby code just got much faster - at least with Rubinius. Unlike the debuggers for MRI or JRuby, the Rubinius full speed debugger allows programs to run at normal speed while they're debugged. We take a look at how the Rubinius VM's transparent design made this possible.

Duck Typing and Protocols vs. Inheritance

by Werner Schuster on  Nov 30, 2007 17

A recent debate on the RubyTalk list asked where to use is_a? vs respond_to? This highlights situations where objects respond to the same interface, but don't share any superclasses. We look at this debate and solutions in other languages such as Smalltalk, Erlang, and Scala.

Interview: Zed Shaw on Mongrel and Ruby in the Enterprise

by Werner Schuster on  Nov 16, 2007 3

Zed Shaw - creator of Mongrel and the Profligacy GUI library - sat down with InfoQ for a video interview. Among the topics discussed are Mongrel, how to make money with Ruby in the enterprise and his interest in alternative languages such as Lua, Smalltalk and Factor.