Simon Willison, Django co-founder and OpenID pioneer, threw away his entire talk in favor of a new one touting the idea, design and implementation of the event-based, works-while-others-sleep, parallelizable-and-beyond server framework Node.js, where you write servers in JavaScript and they perform remarkably close to the theoretical maximum. If you still think the upper limit of what JavaScript is capable of is innerHTML fiddling, you might need some smelling salt and a reality check.
Restricted, semi-potent, reasonably useful FileReader object proposed for the API of HTMLInputElement, which is to say inputs of the file persuasion. You have to pick a file as if you were to upload it at which point the script can fetch an object which can read (and not write) this file.
Microsoft’s new Reactive Extensions, or Rx, reifies events of sorts in .NET but also brings along a pipeline-oriented way of thinking about and responding to asynchronous calls. It does for request-receive-assemble-repeat what queries did for data retrieval; specify what you want to happen, and it will make sure of it. Obligatory eye-opener (as all Channel 9 videos available in H.264, despite the insistence on Silverlight bullshit). Maybe the first truly new technology that Microsoft has come up with in years.
On the other end of the scale is the predictable mea culpa. .NET 4 brings the first usable version of Entity Framework. (I like the pace of this presentation. Lots of code, good features explained with good examples and a rapid clip.)
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