jufo

True, I've got a 4k x 12bit core store in mine, and it's been there over 30 years :-)

...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.

:-(

or can I just host my blog and a few Git repositories?

Yes, it is part of their magazine: http://pragprog.com/magazines/2012-06 (also available in PDF, epub and mobi from http://pragprog.com/magazines)

Try again - I found the bottom ticks were 8 cores and 256GB.

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).

Thank you - I'm just starting this course, and your write-up has given me a much better idea of what to expect.

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.

The authors also worked with Robbins - there are two paragraphs about this towards the end of the article.

I enjoyed reading Sleights of Mind, but never got round to watching the videos on their site, http://www.sleightsofmind.com/media/

I'll do that today. Happy New Year!

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.

Me too. Long delay for 'processing payment' at element5, but it did go through.

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.

As a 60-year-old, I'm glad to see Jim Weirich in the Brit Ruby lineup :-)

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.

Maybe a bit more with the spacesuit glove on!

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).

Dead right. I'm 60 and I feel the same.

I worked for Decca Navigator in the 1970s. They had two ladies (not particularly little or old) who made read-only program memories for the Decca Omnitrac civil aircraft navigation computers. These had core arrays with the sense line hand-woven through the cores, going through a core or bypassing it depending on whether that bit should read as a 0 or a 1. They worked from printed charts referred to as 'knitting patterns'.

You can watch the unwrapping here:

http://www.vg.no/nyheter/innenriks/artikkel.php?artid=100603...

It's a great article. Assuming English isn't your first language, I think @insertnickname is being unfair.

I have a six-year-old 15" MacBook Pro, which is now on its third battery. A year or so ago the original 120GB hard drive started making ticking sounds, and I replaced it with a 500GB drive (not SSD - at today's prices I would have gone for a 256GB SSD). It's still a perfectly capable machine - a bit constrained by being limited to 3GB of RAM, but otherwise fine.

Note that the initial setup instructions and videos are in the "Solutions" directory.

Isn't that just British vs. American English?

http://en.wikipedia.org/wiki/User:SpNeo/Spelling_Guide

You are not giving them your Google credentials - you are allowing them to use Google to sign you in, confirming your identity (name, email). Technical details are here: http://code.google.com/apis/accounts/docs/OpenID.html - the key point is that your password remains private between you and Google.

This is a lesson we all have to learn. At least in Node it is easy to pick up with a tool like JSLint. In Java, you typically have some classes which have to be thread-safe (having no per-request state) and others which are instantiated per request. Developers have to be aware of the distinction, and to code accordingly. I fell into this trap when submitting a change to JBoss back in 2000; Rickard Oberg picked it up within hours (the diffs of all committed changes went out to everyone on the developer mailing list). I'm grateful to him for that, and I've done the same kind of review for many others since then.

The nice thing about node (or any other event-based platform) is that memoizing the Fibonacci function is trivial, whereas in a multi-threaded implementation it would be tricky and error-prone.