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User: maxwell+demon

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  1. Re:Summary is sensationalistic on Google's Self Driving Car Crashes · · Score: 1

    *Frame-dragging is negligible in this case, and you're a nerd if you were going to mention it... says the nerd.

    Frame dragging occurs at relativistic speeds. Were you thinking of the coriolis effect?

    Frame dragging also occurs at non-relativistic speed. One of the missions of Gravity Probe B was to measure the frame dragging of the earth.

    Of course, for all practical purposes the frame dragging of the earth can be neglected. A mouse running through Central Park probably had a larger effect on the building.

  2. Re:What technology is used by TSA? on In German Trials, Airport Body Scanners Easily Confused · · Score: 4, Insightful

    I guess the TSA uses scanners which show the actual scan. In Germany, the scanner's software identifies potential objects and marks them on a schematic picture, so you're not seen naked on the screen. Humans are better at interpreting patterns, and more importantly they learn. After the first few times they've seen sweaty armpits on the scan, they'll probably recognize them. If the software misinterprets sweaty armpits as hidden objects the first time, it will do so for every person until eventually the software gets an explicit update to not misidentify sweaty armpits.

  3. Re:tl;dr on What Today's Coders Don't Know and Why It Matters · · Score: 1

    The fact that GCC is notoriously bad at optimisation?

    The general quality of GCC's optimization is completely irrelevant for this thread.

  4. Re:those young whippersnappers on What Today's Coders Don't Know and Why It Matters · · Score: 1

    No, you are observing the lawn, not the kids.

  5. Re:tl;dr on What Today's Coders Don't Know and Why It Matters · · Score: 1

    (well, GCC might not, but any respectable compiler will)

    What is it that you felt the need of adding some GCC bashing here?

  6. Re:If you want it to work for sure on Ask Slashdot: Overcoming Convention Hall Wi-Fi Interference? · · Score: 1

    But WLAN cables are hard to get.

  7. Re:PEEK on What Today's Coders Don't Know and Why It Matters · · Score: 1

    # man sex

    I see, you are working as root. You'd have safer sex from your user account.

  8. Re:tl;dr on What Today's Coders Don't Know and Why It Matters · · Score: 1

    A variable named "q" is exactly as much code as a variable named "pointer_to_the_structure_containing_the_information_about_xy".
    Code is not measured in characters.

  9. Re:Sounds of failure, the zen way on What Today's Coders Don't Know and Why It Matters · · Score: 1

    A pointer dereferencing to NULL would be a pointer pointing to a null pointer.

    That would be "a pointer dereferencing to a NULL pointer". A "pointer dereferencing to NULL" would be a pointer to a NULL value.

    Since NULL is a pointer value, the only thing which can have this value is a pointer (and please, no nitpicking about null pointer constants being int; that's an artefact of the definition of C and C++; you wouldn't use NULL anywhere but in a pointer context). Therefore anything which dereferences to NULL must dereference to a pointer value, and thus to a null pointer.

    Or to say in in code:

    if (p == NULL)
      printf("p is NULL\n");
    else if (*p == NULL)
      printf("p dereferences to NULL\n");
    else
      printf("p neither is nor dereferences to NULL\n");

  10. Re:IDE debugging really isn't that bad on What Today's Coders Don't Know and Why It Matters · · Score: 1

    No, they didn't complain about modern day programmers using an IDE or debugger. They complained about modern day programmers being lost without them.

  11. Re:It doesn't matter. on What Today's Coders Don't Know and Why It Matters · · Score: 2

    You seem to have this mental model that more efficient code must take longer to develop. But not making bad decisions may take up exactly zero time if you are in the habit of making good decisions.

    A simple example is the ordering of loops. Exchanging the order of loops after the fact may take extra time, but writing the loops in the right order from the start doesn't take more time than writing them in the wrong order.

  12. Re:In my day on What Today's Coders Don't Know and Why It Matters · · Score: 1

    we had to code uphill in 10 feet of snow on an abacus using roman numerals.

    You had an abacus and roman numerals? Luxury! We had to use heaps of stones for our programming. And we liked it!

  13. Re:those young whippersnappers on What Today's Coders Don't Know and Why It Matters · · Score: 3, Funny

    No, it clearly demands a combination of the observer pattern with the command pattern: You observe your lawn, and if you see kids, you command them to get off it.

  14. Re:tl;dr on What Today's Coders Don't Know and Why It Matters · · Score: 1

    What people consistently forget is that today there are generally many applications running at the same time. Also, it makes a big difference in performance if the data you are about to access is still in the cache.

  15. Re:Sounds of failure, the zen way on What Today's Coders Don't Know and Why It Matters · · Score: 1

    What is the sound of a pointer dereferencing to NULL?

    I'm sure you mean dereferencing a null pointer. A pointer dereferencing to NULL would be a pointer pointing to a null pointer.

  16. Secretion message on The History of Invisible Ink · · Score: 1

    Did every MI6 agent get a stack of porn to use when writing hidden messages?

  17. Re:References, all the way down on Wikipedia Losing Contributors, Says Wales · · Score: 1

    If(1) you(2) have(3) to(4) cite(5) every(6) single(7) word(8) and(9) punctuation(10),(11) the(12) articles(13) are(14) going(15) to(16) get(17) hard(18) to(19) read(20).(21)

    We're dead of we have to recursively cite parentheses.

    https://secure.wikimedia.org/wikipedia/en/wiki/Malicious_compliance

  18. Re:I tried to edit Wikipedia once on Wikipedia Losing Contributors, Says Wales · · Score: 1

    You could have taken revenge by reinserting the correction and citing e.g. The Cambridge Grammar of the English Language. He wanted a reference, he got a reference. And he can't say that reference is not notable either.

  19. Re:Deletionists are the main problem. on Wikipedia Losing Contributors, Says Wales · · Score: 1

    Citation needed. ;-)

  20. Re:The problem is WikiPolitics on Wikipedia Losing Contributors, Says Wales · · Score: 1

    I find it sad that someone downrated your comment (twice!) when it seems to be perfectly reasonable to me from my wiki experiences.

    There's nothing in Slashdot which prevents Wikipedia admins from getting mod points. Just saying.

  21. Re:AFDs plz on Wikipedia Losing Contributors, Says Wales · · Score: 1

    Most contributions to Wikipedia are not new articles, but changes and additions to existing articles. Now I don't know what kbolino did (even if Wikipedia should have someone using the same nick, I can't be sure it's him), but I'd be very surprised if most of his contributions were new articles.

  22. Re:CK ref: on Wikipedia Losing Contributors, Says Wales · · Score: 1

    Probably the person from Porlock was Tim Berners Lee, trying to protect the WWW from competition.

  23. Re:Who owns the message bus on Google Developing Master API — Web Intents · · Score: 1

    Well, the most logical thing would be to have the browser handle it, and if there's a request type unknown to the browser, allow to search for it with a provider of your choice. That provider would be just a specialized search engine seeking for handlers instead of generic web pages, and it could be done by every search engine provider.

    Of course it this matches what Google has in mind is another question.

  24. Re:Reinventing the Web Services Wheel? on Google Developing Master API — Web Intents · · Score: 1

    If done right, it would indeed be a very useful thing. However I'm not sure if Google really wants an interface which allows you to select whether you want the service "show the map of New York" requested from the web site to be served by Google Maps or Open Streetview ...

    In any case, the user should be given the option to use a local program instead of a web app. For example, for "edit the image" I might want to use a locally installed Photoshop or Gimp instead of some web app which almost certainly is less powerful, and also likely less familiar (if I have an image editing software installed, most likely it's because I use it). But again, I don't think that's in Google's interest.

  25. Re:Sysadmin decides. on Do Macs Have an Edge Against APTs? · · Score: 1

    Put an incompetent nincompoop in charge of a Linux server and you should consider it as insecure as the most unpatched NT4 box. Security is done by people, not programs.

    Depends. If the server was well configured before he was put in charge of it, the Linux server might still be safe for quite some time, for the simple fact that he didn't yet find out how to change the settings. :-)