pflanze

41 ms·

391.
by pflanze 12y ago
> intelligence locked away in our bodies You may or may not have seen the recent discussion about the "gut brain" and how it influences mood. https://news.ycombinator.com/item?id=7957057
392.
by pflanze 12y ago
This is using antibodies, i.e. works on the principle of passive immunity. https://en.wikipedia.org/wiki/Passive_immunity By calling it a "drug", and that its way of action 'is unknown' etc., the ar
393.
by pflanze 12y ago
A simpler approach that forgoes the lens, relies on the combination of UV and heat, and is promoted under the name "SODIS" and already in use in some places: https://en.wikipedia.org/wiki/Solar_water_disinfect
394.
by pflanze 12y ago
Ok, I'll publish it as soon as I can at https://github.com/pflanze/tinydns-scm I'll send you notification when done if you give me your email (you can contact me at the URL in my profile). (Or supposedly you
395.
by pflanze 12y ago
> It took 400 years This is not a meaningful number either if the drop (or, more to the point, the overhunting) only really started 70 years before the end of the period. I haven't found any clear statement about this, but the follo
396.
by pflanze 12y ago
> because its not a Scheme in the strict sense; Racket does not conform to any of the Scheme reports The same could be said for many, if not most "Scheme" implementations. Scheme didn't standardize stronger language abstra
397.
by pflanze 12y ago
I've written a library in Scheme to generate my tinydns configuration from a functional program. It includes error-checking, IPv6 and SPF support (haven't used DKIM yet). I might clean it up and publish it if there's interest
398.
by pflanze 12y ago
Interestingly, the kill procedure in Perl explicitely checks for non-numbers, which is unusual. Perl as a language would just cast undef to zero in a numeric context[1], and 'kill $signal, 0' would go on killing every process in t
399.
by pflanze 12y ago
Note this recent discussion about bash -e, including my post that "the disappointment with set -e is that it does not work everywhere". https://news.ycombinator.com/item?id=8054440
400.
by pflanze 12y ago
The reason I did it was that (even with JavaScript off, as I always try to do) the layout made it hard to know how far in the text I was, and jumping back and forth was accordingly painful. Also, the huge pictures and "emotional"
401.
by pflanze 12y ago
I've made a reformatted copy for easier reading: https://github.com/pflanze/wired-snowden-untold-story/blob/m... (Plain text version in the history, at https://github.com/pflanze/wir
402.
by pflanze 12y ago
Hm, nobody is mentioning the Raspberry Pi. Isn't this their target audience? Is it too slow, Raspbian not good enough for what they want to teach, or what's the reason? (I'm not a teacher nor have I tried to use a Pi (althoug
403.
by pflanze 12y ago
> Generally getting smooshed from behind is a low-likelihood event. Doesn't this directly contradict the numbers given in the original linked post (40% of accidents)? Edit: there's some discussion about this on[1]. Although, ev
404.
by pflanze 12y ago
I couldn't believe this, so I checked around a bit. According to [1], the cost for offsets are $5.50 to $29 per ton of CO2. According to [2], 1 kWh produces 2.08-2.18 lbs kg of CO2 when burning coal (0.94-0.99 kg). Thus, the cost for t
405.
by pflanze 12y ago
Agreed, although the blame then still lies with the device the secure kernel is running on, or the company that produces it, or the client for choosing to buy it. I guess you can say that proven software is power, and power can be misused.
406.
by pflanze 12y ago
You seem to be misunderstanding the kind of security this is about. It's not about taking away control by the owner, just about preventing ways of control by third parties that you as owner didn't intend to give. From https:&#x2F
407.
by pflanze 12y ago
You can't count on it in the general case even with gcc (even when taking care to heed the restrictions like not passing pointers to data on the stack, and putting all functions into the same compilation unit). I did tests a couple yea
408.
by pflanze 12y ago
One of these would provide 4 kW, too (although I don't know for how long), and is only 5.8 kg: http://www.ev-power.eu/Winston-40Ah-200Ah/WB-LYP160AHA-LiFeY...
409.
by pflanze 12y ago
Isn't limescale going to make this unusable quickly? Perhaps those structures will need to be moved through acid baths periodically and automatically. What about dirt? I guess that's the joys of research when you've got a pra
410.
by pflanze 12y ago
The disappointment with set -e is that it does not work everywhere: - with an unset 'hello' variable, try: set -eu echo "`echo $hello` world" echo "huh still going?!" foo="`echo $hello` world&quo
411.
by pflanze 12y ago
I wonder why not to set IFS='' then. I haven't used this myself in production, but quick testing seems to do what I expected: make $foo behave like "$foo".
412.
by pflanze 12y ago
He probably assumes that processes are usually short-lived or limited in their scope (that's the design principles he used in his software, anyway). That way "source creep" doesn't happen so quickly. It reminds me of the
413.
by pflanze 12y ago
I didn't find this very readable, so I've added formatting. https://github.com/pflanze/slides-djb-20140710/blob/master/s...
414.
by pflanze 12y ago
Can you show an example to support your claim (of the invalidity of the asymptotic claims with lazy evaluation)? Given that the lazy term is evaluated (and thus the mutation happening) only once, how does that enable one to avoid the log(n)
415.
by pflanze 12y ago
I wanted to compare the amount of investment with the GSoC[1] program. The GSoC home page[2] says it supported over 7,500 students; since each student/mentor pair(?) receives $5500, that makes about $41m, with overhead probably about t
416.
by pflanze 12y ago
He's not really random, at least I remembered his name. He may have invested enough into the XML, and since Java is pretty strongly into XML, perhaps also the Java world to feel justified venting about it. https://en.wikiped
417.
by pflanze 12y ago
I've now implemented the binary search version; I was right, the factor 10 was about correct, and even with 20 mio buckets the algorithm is still faster than the FPGA and more than 3 times faster than his faster software algorithm even
418.
by pflanze 12y ago
That does not explain it. Yes it will be slower with more buckets; how much? numbuckets uint64 uint32 1000 6 ms 5 ms 10000 6 ms 5 ms 100000 6 ms 7 ms 1000000 14 ms 8 ms 10000000 38 ms
419.
by pflanze 12y ago
I don't understand why binning 1 million values would take more than a second on the CPU. I've tested the following in C: int len= 1000000; int numbuckets= 1000; double* vec= ...; // malloc(sizeof(double)*len) an
420.
by pflanze 12y ago
I often recompile packages from testing or unstable on stable, to get newer versions, or because I need to patch something. This is usually more productive than installing from upstream source. (Exceptions are packages with a big tree of de

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