InfoQ Homepage Programming Content on InfoQ
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Robert Pickering on F# Workflows
In this second InfoQ exclusive article, Robert Pickering continues the conversation diving deep into how workflows work in F#. Workflows in F# provide the building blocks for library implementors to create DSLs.
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Programming languages in future systems
The trend seems to be clear; in the next few years there will be an increase in adoption of new programming languages and systems will be written in multiple languages. But what does the mix look like, and which languages are suitable for what? In a recent post, language explorer and JRuby developer Ola Bini describes what future systems may look like.
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Rails 2.0 - What's a Newbie to Do?
Rails 2.0 is out - but some of the standard books and tutorials haven't been updated to this version yet. Trying to learn about Rails with a Rails 1.2 book or tutorial, but running Rails 2.0 is bound to cause some frustration. We look at the best approach to tackle this.
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Separating business logic from technology: Kathleen Dollard on a new view of code generation
Even the most successful project becomes a failure when a new technology comes out and everything has to be rewritten from the ground. This is why business logic has to be separated from technology. And, according to Kathleen Dollard, code generation is a promising approach to achieve it.
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Does lines of code kill?
Steve Yegge touched a nerve in the development community when he argued that keeping the code size to an absolute minimum is the most important thing when developing software. In his view, you may have to sacrifice some design patterns and avoid refactoring at times just to keep the lines of code down. And if your problem is large enough - you may have to switch to another programming language.
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Autotest - a hidden tool gem
Autotest runs your tests whenever you save your files - actually, it's smarter than that. We take a look at how a tool like Autotest helps Ruby developers be productive without needing an IDE.
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Does Dependency Injection pay off?
There has been an interesting discussion in the blogosphere about the benefits or lack of benefits from using Dependency Injection. The question is — does Dependency Injection really pay off?
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InfoQ Presentation: MetaProgramming Ruby
InfoQ presents a video of Dave Thomas' QCon London presentation "MetaProgramming Ruby". Dave presents the basic Ruby language features for implementing Ruby on Rails features such as has_many. Class methods, open classes, Mixins, and more tools for metaprogramming are demonstrated and explained.
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Microsoft Renames Silverlight 1.1 to Silverlight 2.0, Announces Features
Microsoft has decided to rename the yet-to-be-released Silverlight 1.1 to Silverlight 2.0 and released in beta form in Q1 2008 shipping with a Go-Live license so developers can create applications immediately.
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Article: Using Singleton Classes for Object Metadata
We have another feature article to publish by InfoQ's own Werner Schuster where he elegantly explains a way to annotate object graph with metadata to solve complex problems.
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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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Jonathan Allen on Equality Operator Overloading
Jonathan Allen provides guidance through a systematic walkthrough of both a reference type and value type that support equality. Jonathan provides code samples in both VB and C# to demonstrate the nuances of each .NET language. He also covers usage in both structures and classes.
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Surprising criticism from parting Microsoft development lead
Jay Bazuzi, once Development Lead for the C# Editor, is leaving Microsoft, and he wrote some surprisingly harsh parting words for his friends before he left; things like “OO isn’t a fad” and that “It’s OK to use someone else’s code”.
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Borrowing Functional APIs from F#
The Common Language Specification ensures that any conforming .NET language can access libraries created by any other language. This means imperative languages like VB and C# can call functional libraries created primarily for F#. In fact, many can be converted directly into C# code.
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Understanding the ActionScript Virtual Machine for Java Developers
The ActionScript Virtual Machine 2 (AVM2) executes ActionScript 3.0 (AS3) bytecode in the Flash Player 9 runtime. ActionScript 3 is an Object Oriented programming language, used by developers to build Flash based applications in Adobe Flex and AIR.