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Superconductivity without cooling?
Infrared laser pulses modify the structure of the high-temperature superconductor YBCO and make superconductivity possible at room temperature.
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The latest blog posts to take off on Hacker News. 3,400 posts.
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Icdiff: side-by-side command line diffs
Your terminal can display color, but most diff tools don't make good use of it. By highlighting changes, icdiff can show you the differences between similar files without getting in the way. This is especially helpful for identifying and understanding small changes within existing lines.
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Ignoring pull requests discourages open-source contributions
What's the first thing you do when you find a bug or see a missing feature in an open source project? Check out the project page and submit a patch!
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New Paypal gateway UI susceptible to spoofing
Hey. I decided to get a paid plan on Github and Paypal looked like a good payment option to me. Click the blue button here : This looks ...
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Zusie – My Relay Computer
The story behind Zusie begins in May 2008, when I went on vacation to Berlin for a few days with a friend. As is my habit, I looked for interesting technical or scientific sites to visit, and the main thing to visit was the Technische Museum. I think I spent a full day day there, to the expressed dismay of my friend…
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Make your program slower with threads
Years ago, while taking a numerical methods course, I wrote some code to calculate the expected number of shared birthdays in a group. The code is very simple: each attempt constructs a vector of N birthdays, then counts the duplicates. The outer loop runs millions of attempts, and calculates the mean number of shared…
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XSLT is a failure wrapped in pain
“ The essence of XML is this: the problem it solves is not hard, and it does not solve the problem well.” – Phil Wadler, POPL 2003
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Clean OS reinstalls with propellor
You have a machine someplace, probably in The Cloud, and it has Linux installed, but not to your liking. You want to do a clean reinstall, maybe switching the distribution, or getting rid of the cruft. But this requires running an installer, and it's too difficult to run d-i on remote machines.
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Academia as an ‘anxiety machine’
We learned recently of the suicide of Stefan Grimm, a successful professor at the prestigious Imperial College in London. Professors Grimm regularly published highly cited articles in the best journals. He was highly productive. Unfortunately, some of his colleagues felt that he did not secure sufficiently large…
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Chaos Computer Club Website Blocked by UK ISPs
A significant portion of British citizens are currently blocked from accessing the Chaos Computer Club's (CCC) website. On top of that, Vodafone customers are blocked from accessing the ticket sale...
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I Love Julia
For the past half year I’ve been exploring Julia in piecemeal fashion. It’s a language that does not conform to the traditional notions of programming. Julia...
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A quick tutorial on implementing C memory management functions
This is basically an expanded explanation of what I did after reading this tutorial by Marwan Burelle and then sitting down and trying to write my own implementation, so the steps are going to be fairly similar. The main implementation differences are that my version is simpler and more vulnerable to memory…
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A Formula for the Number of Days in Each Month
Recently, after being awake for longer than I should have, I started thinking about methods of remembering the number of days in each month of the year. There is a rhyme for it, and a way to count on your knuckles, but these didn’t satisfy me. I wondered if there was a mathematical formula for the problem, and upon…
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Why I like XSLT
I first fell in love with XSL in 1999, when Microsoft rolled an XSLT processor into MSXML. I got my hands on the works of Shakespeare marked up in XML
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Apple CoreGraphics framework logging input data to /tmp
Security researcher Kent Howard reported an Apple issue present in OS X 10.10 (Yosemite) where log files are created by the CoreGraphics framework of OS X in the /tmp local directory. These log files contain a record of all inputs into Mozilla programs during their operation. In versions of OS X from versions 10.6…
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Announcing Docker Machine, Swarm, and Compose for Orchestrating Distributed Apps
Docker is a founding member of the Blueprint Alliance, a 12-company reference architecture for securing AI agents, built around four governance questions.
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A farewell note to a programming language
Do you remember how we first met, back in 2012? I thought your functional approach was fresh, and different. For a while I believed we were made for each other. A first project was a success; on my own I was comfortable with the good parts of you. But as soon as I started working in teams writing Scala, your immense…
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The R language, for programmers
Some things about the R programming language that programmers coming from other languages are likely to trip over.
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The No CAPTCHA problem
When I read about No CAPTCHA for the first time I was really excited. Did we finally find a better solution? Hashcash? Or what? Finally it...
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Extending Van Gogh’s Starry Night with Inpainting
Digital inpainting can extend or repair photos, artwork, and other images. See how it works in the Wolfram Language, and try it yourself.
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6 GHz frequency modulated radar
Making a cheap and simple radar with a range of about 100 meters.
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Java Doesn’t Suck
I've been building enterprise Java web apps since servlets were created. In that time the Java ecosystem has changed a lot but sadly many enterprise Java…
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Firebug 3 and Multiprocess Firefox
Firebug 3 alpha was announced couple of weeks ago. This version represents the next generation of Firebug built on top of Firefox native developer tools. There are several reasons why ...
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Hacking PayPal Accounts with one click
Today I am going to publicly disclose a critical vulnerability I have found during my research in PayPal, This vulnerability enabled me to completely bypass the CSRF Prevention System implemented by PayPal, The vulnerability is patched very fast and PayPal paid me the maximum bounty they give ;).