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Duck Typing and Protocols vs. Inheritance
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.
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Oniguruma Java port speeds up JRuby
Joni, the Java port of the Oniguruma Regex engine, has been merged into the JRuby trunk. This promises to be the final step in implementing compatible and fast Regexes for JRuby... and initial tests with REXML seem to back that up.
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Interview: Zed Shaw on Mongrel and Ruby in the Enterprise
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.
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InfoQ Presentation: Eric Evans on Domain Driven Design - Putting the Model to Work
Why bother with models? Eric Evans explains that the most critical complexity of most software projects is understanding the business domain itself. In this talk Evans talks about the foundations of Domain-Driven Design and how to make a domain model truly pull its weight and positively transform a project.
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Is the future of JavaScript ECMAScript 4?
The discussion on the future of ECMAScript has been quite lively lately. Brendan Eich kicked off a flurry of posts about ECMAScript 4 and if that is the right path.
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Interview: Jay Fields and Zak Tamsen on Domain Specific Languages
Jay Fields and Zak Tamsen talked with InfoQ about Domain Specific Languages (DSLs), and how they have successfully used them in their projects at ThoughtWorks to empower businesses, reduce development time, and increase the agility of projects.
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JSR-292 and the Multi-Language VM
The JSR-292 effort formed in early 2007 to improve support for dynamic languages on the Java Virtual Machine (JVM). Thus far, the effort has focused on an invokedynamic instruction for the JVM, but has recently included movement towards the creation of a multi-language virtual machine project.
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Visual Basic 9 Specification Released
Microsoft has released the specifications for Visual Basic 9. This implies that the language is hardening and probably will not change much between now and the release date, expected to be later this year.
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PHP on Java: Best of Both Worlds?
In the past 18 months PHP seems to be gaining increased relevance in the Java community. We talked with both IBM (who is implementing PHP support in Project Zero) and Caucho (the maker of Resin and more recently Quercus, a PHP interpreter with native Java integration) to get their take on the emerging Java/PHP hybrid stack.
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Java, Ruby, and the Continuous Tax
Recently as part of a debate on ActiveRecord and Hibernate, Bob Lee of Google used the term "continuous tax" to describe the pros and cons of using a dynamically typed language like Ruby in respect to a statically typed language such as Java.
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JRuby compiler finished
As Charles Nutter reports, JRuby's Ruby to Bytecode compiler is finished. This is used for AOT and JIT compilation, and will go into JRuby 1.1. Future plans include a compiler that could help with Java integration by turning Ruby classes into Java types.
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Charles Simonyi reveals production use of Intentional Software @ JAOO
Charles Simonyi (recent space tourist, and ex-Microsoft lead architect of Word & Excel) presented Intentional Software at the JAOO conference today. Intentional is building a domain language workbench, which allows business experts write domain code in their own familiar notations, that code then being used to generate the rest of an application.
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Is it too late for Parrot VM?
The Parrot Virtual Machine recently had it’s sixth birthday. Parrot is a VM that sprung out of the Perl6 development, which primarily targets dynamic languages, but also for instance .NET and C99. But six years is a long time, and both Microsoft and Sun is targeting this segment. Is it too late for Parrot?
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Interview: Eric Evans on Domain Driven Design
Ever since Eric Evans wrote the book Domain-Driven Design in 2004 he has been a significant voice advancing domain modeling and design concepts. In this interview with Floyd Marinescu he talks about some of the recent refinements in Domain-Driven Design and how people are advancing the field today.
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Visual Basic and C#: Differences in Nullable Types
When .NET 1.0 was released, VB and C# were very similar. But with the fourth version nearing release, the differences are really mounting. Today we look at the subtle differences in nullable types that can trip up developers.