...and all Marakana's videos have disappeared from the net.
I have many links to videos from JAXConf2013, the SF Java User Group, the 2012 Northeast Scala Symposium, etc. and they now all redirect to https://marakana.com/ - a single page announcing their acquisition by Twitter.
I think the "half an hour" bit is significant. If someone complained that they tried to learn Prolog and gave up after half an hour they wouldn't get much sympathy from me.
Nice presentation. In the description of back end modules, you mention payments as a future capability. What kind of payment service would you be able to work with? (I don't see how you could handle card details in the Hoodie architecture). Thanks.
A good solution should also minimise movement, to conserve energy and reduce mechanical wear. And part of the orbit is in darkness - the criteria would be different there (not optimising illumination, but needing to be ready for the return to daylight).
If you have to do this, you could check that the published time was >= the time at which you started the test, and <= the time at which you are doing the check.
Thanks very much - that app shows me a quiet way from home (Raynes Park) to work (Leatherhead); 13.4 miles. It's far enough off the busy roads I know that I would never have discovered it unaided. On to Street View... then the forecast is good for New Year's day, so it's a good opportunity for a practice run.
In the video, Prof. Widom mentions that the platform they are using now, Class2Go, has been developed at Stanford and is open source. A quick look at http://class.stanford.edu/ shows that it depends on external components - YouTube for video, and Piazza for forums - but it's good to have an open platform, and one of the aims is to avoid lock-in of content.
I'm having a quick read through (3 chapters so far) and I think it is beautifully written. (quite a few broken images in the SVG parts of chapter 3 at present)
Edit: just purchased the eBook, and the images are fine in the PDF.
Rails was developed when David Heinemeier Hansson was still in his home town, Copenhagen, Denmark. He was working part-time for 37signals, but it was several more years before he moved to Chicago.
On Saturday Maplin's online stock check said there were two starter kits still in stock at Wimbledon - a little over a mile away from me. There had been five in stock a few days before. I walked there and was in time to get the last one. Now there seem to be none left in the London area, and the online site says new stock is due in 16 days. Let's hope the next batch will have 512MB Pis - the Pi in my kit is in an element14 box, but is not the latest board version (not made in UK, no mounting holes).