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Getting started with SwitchYard 2.0.0.Alpha1 on WildFly 8.1.0.Final

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I’ve been sticking my head into some hot RedHat technologies lately and among the many interesting parts I found SwitchYard. Without being disrespectful towards everybody wrapping their heads around SOA and service oriented architectures in the past, this has always been kind of weird to me as a Java EE developer. In the past I’ve been building component oriented applications ...

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JavaScript Promises Are Cool

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“And when I promise something, I never ever break that promise. Never.” ― Rapunzel Many languages have libraries of interesting schemes called promises, deferreds, or futures. Those help to tame the wild asynchronous into something more like the mundane sequential. JavaScript promises can promote separation of concerns in lieu of tightly coupled interfaces. This article is about JavaScript promises of ...

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The Experience Paradox–How to Get a Job Without Experience

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One of the most difficult things about becoming a software developer, is the experience paradox of needing to have a job to get experience and needing to have experience in order to get a job. This problem is of course not relegated to the field of software development, but many new software developers often struggle with getting that first job–especially ...

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Hibernate Statistics with Hawtio and Jolokia

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A huge part of enterprise Java deals with data. Among all the different ways of working with data in enterprise settings, there is still the proven and widely taught approach to use O/R mapping of any kind. The JPA standard makes this comparably easy to use for everybody and it should also be portable. But let’s not talk about migration ...

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Test Attribute #7 – Footprint

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When we talk footprint, we’re really talking about isolation. Isolation is key to trust. Wait, What? The “checking” part of testing, is really about trust. We check, because we want to make sure our system works as we anticipated. Therefore, we build a suite of tests that confirm our assumptions about the system. And every time we look at the ...

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Why I distrust wildcards and why we need them anyway

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In any programming language that combines subtype polymorphism (object orientation) with parametric polymorphism (generics), the question ofvariance arises. Suppose I have a list of strings, type List<String>. Can I pass that to a function which accepts List<Object>? Let’s start with this definition:             interface List<T> { void add(T element); Iterator<T> iterator(); ... } Broken covariance Intuitively, we might ...

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