InfoQ Homepage Programming Content on InfoQ
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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.
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Is a picture always worth a thousand words?
<p>Is a picture always worth a thousand words?</p> <p>In his recent article, “Why we write code and don’t just draw diagrams”, Dean Wampler argues that in software development the opposite is more often true. </p>
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Book Review: Implementation Patterns
Kent Beck's new book, Implementation Patterns, is a book about writing code in Java. The patterns in this book are based on Kent's reading of existing code as well as his own programming habits. The patterns in this book are meant to be a coherent view of how to write code people can understand.
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Article: Beyond Foundations of F#
Since Robert Pickering published Foundations of F# in May, the language has grown significantly. Besides adding a host of new features, it is being moved from a research project to a fully supported, production-grade release. We asked Robert to discuss some of the new features in F#.