Definition: Aspect Oriented Programming (AOP) is a programming paradigm where each application can focus on its primary functions and core concerns by encouraging greater modularity and increasing separation of cross-cutting concerns (such as logging and authentication). Purpose: In any real-world applications, when you’re writing code to address the problem domain (say, booking an order) you …
I was having an email conversation with a friend on WPF yesterday and he suggested putting it into a blog post after I went on and on for a bit (sorry Raj!). Having spent some time learning Silverlight (which is a subset of WPF for the web, Microsoft’s equivalent of Flash) I have really come …
Following my previous post on multi-language (polyglot) and multi-paradigm (poly-paradigm) development, I thought I’d continue on the same thread for a little and do some comparisons on some of the popular types of programming languages. Definition: An imperative programming language such as C# or Java allows you to specify step-by-step how a problem should be …
Just finished watching an interesting seminar video by the guys from Object Mentor (a consultant company founded by Robert C Martin, the father of agile development) at: http://www.infoq.com/presentations/polyglot-polyparadigm-programming The video is about an hour long and covered a large number of topics around using different languages (polyglot) and different programming paradigms (poly-paradigm) to simplify and …
Definition: A Cross-Cutting Concern is a concern your application needs to address that is unrelated to your application’s problem domain, and ‘cuts across’ other concerns. Typical examples include: logging persistence security error handling They are usually difficult to decompose from the rest of the system and result in tangled code. Addressing these cross-cutting concerns will …
Definition: A Domain Specific Language (DSL) is a programming language that’s dedicated to a particular problem domain. DSLs are often used to support domain-drive design and modelling. It’s the opposite of general purpose programming languages such as C# or Java. Advantages: Code looks like domain prose. Easier to understand by everyone. Easier to align with …
Definition: Dependency Inversion Principle refers to a specific form of decoupling aimed at rending high-level modules independent of the low-level modules’ implementation details. Its principle states: High-level modules should not depend on low-level modules, both should depend on abstractions. Abstractions should not depend upon details. Details should depend upon abstractions. Dependency Inversion Principle is often …
Buzzword Buster – Dependency Inversion Principle Read More »
Definition: You have Spaghetti code when the flow in your application becomes so complex and tangled it resembles a bowl of spaghetti where the different execution paths are twisted and intertwined it’s hard to make out where they start and end. In software design, this is usually a danger associated with procedural programming or frequent, …
Definition: You have Macaroni code when your application is chopped up into many little pieces and it’s difficult to see the big picture which may exist only in your (or someone else’s!) head. In software design, you can often end up with Macaroni code when you overuse/misuse/abuse abstractions, and it’s one of the main dangers …
Definition: Inversion of Control (IoC) refers to the inversion of the flow of control (the order in which individual statements, function calls, etc. are executed) in a software. You’ll often hear the term Hollywood principle being mentioned in the same breath as IoC, it simply states "Don’t call us, we’ll call you" which more or …
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