leni536

59 ms·

841.
by leni536 7y ago
Let c_{n,m} be the expectation value of the number of remaining half pills starting from n whole pills and m half pills. Then we get the following recursion: c_{n,m}=n/(n+m) c_{n-1,m+1} + m/(n+m) c_{n,m-1} Boundary condition: c_{0
842.
by leni536 7y ago
That's not strictly true. Undefined behavior includes unsuccessful compilation as well [0]. But for this the compiler has to prove that the offending code is executed every time the program is executed. I think compilers don't bot
843.
by leni536 7y ago
Who knows? This could make a nice little experiment. 1. Leave the antenna connected 2. Unplug the antenna, leave the connector unterminated. 3. Terminate the connector with ball of tinfoil. 4. Use a proper impedance matched te
844.
by leni536 7y ago
I guess it's much less likely if the exposed antenna connector is properly terminated.
845.
by leni536 7y ago
A~N(0,1) and I~Bernoulli(1/2) are independent random variables. Then both X1=A and X2=(1-2I)*A are Gaussian random variables. They even have 0 covariance but they are not independent. Also X1+X2 is not Gaussian.
846.
by leni536 7y ago
The problematic commit reduced the number of disk IO at bootup which resulted in starving getrandom() from the necessary entropy. If disk IO is already considered a reliable source of entropy then there is no reason to not actively exercise
847.
by leni536 7y ago
> if all k components are Gaussian random variables, then X must be multivariate Gaussian They need to be independent as well or there should be some other criteria. Otherwise I have counterexamples.
848.
by leni536 7y ago
> The correct fix is to fix getrandom() to not block when it's not appropriate,... I'm not a cryptography expert, but this suggestion doesn't look right. Edit: IMO the main problem is the lack of a forward progress guarant
849.
by leni536 7y ago
It's actually a great idea, assuming that background light levels are properly taken care of and the camera is well calibrated to a linear colorspace. Unfortunately "pixels" don't really blend linearly when transferred o
850.
by leni536 7y ago
And of course for that you need some training data. https://imgur.com/3jYKQ6r
851.
by leni536 7y ago
The currently used C standards have no direct relationship with K&R and they define both the language and the standard library functions.
852.
by leni536 7y ago
I don't fully grasp what you are trying to do here. This looks familiar though: > What I have specifically is a class that provides a base set of operations and a subclass that lets you do some modifications If you actually do this
853.
by leni536 7y ago
What would be the utility of such a constructor? You can just initialize const objects with regular constructors. How are these objects not "true" const?
854.
by leni536 7y ago
I have a T420s but with an optimus configuration. The dedicated GPU is pretty much useless because of thermal throttling and yes, even the i5 alone is often enough to go into throttling territory. This is after repasting and thorough cleani
855.
by leni536 7y ago
> Are there any negatives to this approach? Well, probs[x] can go negative when you decrease it, if I'm not mistaken.
856.
by leni536 7y ago
So you have near 100% of effectiveness if you find near 100% of them, dead or alive. Given that there are probably a significant number of cases where the person is actually dead and never find their corpse I doubt that near 100% effectiven
857.
by leni536 7y ago
> With a team like that, Rambam says he has a near 100 percent effectiveness rate at finding people... I'm not sure how one could measure this. > I’m always amazed at how infrequently people use cash for this shit. Maybe more of
858.
by leni536 7y ago
It's a great way to learn though.
859.
by leni536 7y ago
> Don't the vast majority of people think there is a singular set of correct ethics? I agree that maybe most people believe in objective morality, but moral relativism exists and I don't think that it's so unpopular that i
860.
by leni536 7y ago
In Hungary GFCI devices are installed per-circuit, so at most 3 devices in typical homes. I don't get why they have to be per-outlet.
861.
by leni536 7y ago
Probably. AFAIK GFI measures the current difference live and neutral, so a current between live and ground (as in the third slot) would trip it. Imagine if someone forms a path for current between a "grounded" metal case and live.
862.
by leni536 7y ago
UB includes the code not compiling, although it rarely happens in practice.
863.
by leni536 7y ago
Notice how the drawn Gaussian doesn't follow the bottom row of binomial coefficients of the Pascal's triangle[1]. The model that assumes that each ball independently falls left or right exactly one unit is limited and doesn't
864.
by leni536 7y ago
You can achieve something similar with Zerotier's ipv6 addresses. You only get encryption but no privacy though.
865.
by leni536 7y ago
Interestingly enough C++ has a recent proposal that converges to a similar design from the other direction (i.e. exceptions). http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p070... It&
866.
by leni536 7y ago
In the article they mention that most programs are not dominated by arrays but objects. An other cure for that is to use arrays of primitives a lot more: https://www.youtube.com/watch?v=yy8jQgmhbAU
867.
by leni536 8y ago
gcc can optimize generic code for a carry check. To be fair both clang and msvc fails to optimize this specific case. https://godbolt.org/z/6WXfnL Edit: OK, I have much worse time generating "adc" instruction
868.
by leni536 8y ago
I ran it through gcc -E and clang-format. https://pastebin.com/21qiRDi5
869.
by leni536 8y ago
pdfsig from poppler-utils is vulnerable to SWA. I expect any poppler based pdf readers (that actually bothers with signatures) to have the same vulnerability. edit: mutool sign is also vulnerable to SWA.
870.
by leni536 8y ago
Well, Adobe Reader 9 seems to catch all three attacks. Maybe the design is dumb but it can be saved: Don't accept a signature that excludes anything from hashing except the signature and certificates itself. Although I hope that visual

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