Practical Concurrency Patterns: Immutability (Freezables)

dotnet.dzone.com — Another very simple pattern builds on the foundation of the Safe-Unsafe Cache pattern. What is the easiest way to protect data from multi-threaded access and to incur the minimal performance cost while doing so? Making it read-only! read more...

add a comment | category: Patterns | Views: 2

CSS design patterns: Helper classes

submitted by maxtoroq 3 days, 1 hour ago

maxtoroq.wordpress.com — Helper classes are reusable rules that use class selectors. Helper classes are designed to let you: 1) Apply style to an element without having to create a special rule for that element. 2) Abstract away browser inconsistencies. 3) Make documents more style readable. read more...

add a comment | category: Patterns | Views: 12

Setting Sail with the Smuggling Pattern :: Part 1

adronbhall.com — Maybe because I'm often entertained by the geekiest of things, I've started usage of the Smuggling Pattern named after a fellow software architect Matt Davis's terminology of smuggling data into and out of Excel. It is something that I've lately needed to do on a regular basis, get data into and out of Excel without Excel, or at least the evil COM Interop Model, really knowing what is going on. In other words, I want total programmatic control over data so I can trust it versus Excel mangling my poor data up. This is what the Smuggling Pattern is going to do for me, and it is doing it well. Now you might think, "WTF!" But just to clarify, the Smuggling Pattern is really the Builder Pattern that we architects know and love with a cooler more fun more pirate like name! So with that, here's some of that code, and the TDD process I undertook to get this sucker built to set sail. read more...

add a comment | category: Patterns | Views: 2

Strongly Typed Primitives

submitted by wisemx 4 days, 19 hours ago

blogs.msdn.com — No, I’m not talking about NEANDERTHALS (there’s a joke in there somewhere), but rather a technique that a colleague of mine, Josh Twist, has recently blogged about – “Avoiding Primitive Obsession to tip developers into the pit of success”. I’d always seen a pit as symbolic of failure, so I’m pretty pleased there’s such a thing as a pit of success – improves my odds massively J I’ve drawn attention to this because it is an approach I discovered a few years back, and I love it. I just use a slightly different implementation to Josh; read more...

add a comment | category: Patterns | Views: 4

Implementing a Repository and Specificaiton pattern using Linq

codeinsanity.com — In my previous post I put down some thoughts on the Repository and Specification patterns and in the end said that with the introduction of Linq and the growing popularity of ORM frameworks and their support for Linq, it’s time to look back at these two patterns and see how we can leverage Linq to simplify the patterns and make them infrastructure agnostic. read more...

1 comment | category: Patterns | Views: 269

Big Oh in the parallel world

igoro.com — Big-Oh notation is a simple and powerful way to express how running time of a particular algorithm depends on the size of the input. But, what about the complexity of parallel programs? There are several ways to incorporate this variable into the Big-Oh notation, and I am going to describe them one-by-one. read more...

add a comment | category: Patterns | Views: 0

Function-centric to data-centric to Model-centric

subjunctive.wordpress.com — I recently picked up a 17 year old text talking about OO programming and it got me thinking about where we are going with application building. 17 years ago coding was too function-centric but it should have been more data-centric. Now that OO is fairly mainstream coding is too data-centric, and the claim is that we need to be more model-centric. Where are we going from here? read more...

add a comment | category: Patterns | Views: 5

Design Patterns - State Pattern

submitted by CumpsD 12 days, 1 hour ago

blog.cumps.be — It's been a while again, but it's time for another pattern. Today we'll look at the State Pattern. First of all, the definition: "Allow an object to alter its behavior when its internal state changes. The object will appear to change its class." read more...

add a comment | category: Patterns | Views: 6