Subscribing to a ko.computed isn’t the same thing as subscribing to a ko.observable. Ryan Niemeyer has written on the topic and I’ll admit, it took me a while to wrap my head around it. I’ll go over the problem and how we bypass it, but the end result is really handy and reusable: a new ‘efficientlySubscribe’ method that is a part of all ko.computed’s.

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Ryan Niemeyer has a great article on the protectedComputed that he came up with, but I needed a little more functionality out of it. I ended up adding a few things and wanted to get it online for public consumption if anyone found the new functionality useful, so here it is!

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Sprites have always been great for web development but it was a significant undertaking to actually implement them – Not anymore though!

Most developers I know didn’t bother implementing them because of the pain associated with maintaining your sprite and the css classes. Sure you could use an online generator but that was a pain because it wasn’t a super simple process to add / remove images. You’d have to go to a site like css-sprit.es or csssprites.com and upload all your images and then update the project with the updated sprite and css. Bleh, that’s a huge pain. Don’t get me wrong, those sites were extremely useful for those that had to use them, but all this stuff should be done for us nowadays.

I love the idea of sprites but this was too much work, thankfully Microsoft came up with an awesome NuGet package that will probably be a part of MVC4!