m31415

5 ms·

1.
by m31415 7y ago
What I meant is that I'm not being pedantic for the sake of being pedantic.
2.
by m31415 7y ago
That's like saying a well-written C program is a good reference for C++. In any case, writing POSIX-only shell scripts is much harder than writing Bash scripts, which can often be much faster (e.g., one can use {1..10}, which doesn&#x
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by m31415 7y ago
Not being pedantic, but OP's script isn't Bash, it's POSIX sh. POSIX sh can be executed in Bash, but there are several differences. The only non-POSIX command I can spot in that script is shuf.
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by m31415 7y ago
This is based on one person's (DHH's wife's) experience with an algorithm. Hyperbole much?
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by m31415 7y ago
> Why in the fuck do I have to pay a publisher to submit homework to my professor? The argument is that it makes it easier for the professors/teachers to grade homework when they're submitted electronically. Of course, that&#x
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by m31415 7y ago
Indeed, I would say most "modern" introductory physics textbooks (including newer editions of old texts like Halliday and Resnick or Sears and Zemansky) are terrible. Of course, the quality of printing, graphics, etc. have improv
7.
by m31415 7y ago
This is an excellent article. Much of the discussion about digital vs. dead-tree books is similar to Stallman's "Right to Read" essay [1], which was published 22 years ago in 1997. As a graduate teaching assistant who has ta
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by m31415 7y ago
But not all American whiskys are spelt "whiskey", e.g., Maker's Mark: https://www.makersmark.com/
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by m31415 7y ago
Not that I know of, but many of the problems have been discussed online, e.g, calculating the average of the 100th power of sin in under 5 minutes [1], which according to Arnold, if you cannot solve, you don't understand mathematics. [
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by m31415 7y ago
Some problem collections by Arnold: * Problems for Children from 5 to 15: http://jnsilva.ludicum.org/HMR13_14/Arnold_en.pdf * A mathematical trivium pt. 1: http://www.physics.montana.edu/avorontsov&#x2F
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by m31415 7y ago
Yes, and quite a few Mir books are available freely [1] [1] https://mirtitles.org
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by m31415 7y ago
For mathematics, I would recommend: 1. "What Is Mathematics? An Elementary Approach to Ideas and Methods" by Courant and Robbins -- a general book on mathematics in the spirit of Feynman lectures. 2. Strogatz's "Nonlinea
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by m31415 7y ago
This is nuts. Mozilla should at least allow the user to set a custom search engine using an about:config option, like the old keyword.URL [1] option, which was removed after Firefox 23. I use DuckDuckGo with several customizations as POST
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by m31415 7y ago
From the conclusion > the FSF needs to focus on the algorithms that change people behavior Is this satire or does the author really want the FSF to engage in mind control? This is such low-effort tripe and obvious personal attack.
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by m31415 7y ago
Don't you notice a slowdown in your connection on using a 20MB hosts file?
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by m31415 7y ago
From the article: > I also loved Louisa Gilder’s The Age of Entanglement and Kip Thorne’s Black Holes and Time Warps. That one was slow for me, but it was like being in the kind of physics class I always dreamed of taking. At Harvard I h
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by m31415 7y ago
In Kim Stanley Robinson's 2312, Venus is terraformed by inserting a large sunshade in the L1 Lagrange point of the Venus-Sun system. This makes Venus significantly cooler and atmospheric CO2 freezes. The frozen CO2 is then easily rem
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by m31415 8y ago
> I can see definitely a lot of added value to the scientific document there. You fail to see that nonprofit publishers (IEEE, AIP, APS, AMS, etc.) also typeset and copyedit articles just like Elsevier, and that too at a much smaller pri
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by m31415 8y ago
Even if they don't read HN, I'm sure Elsevier execs know about the general discontent against costly journals. There have been numerous campaigns [1] to boycott journals published by Elsevier. [1]: http://thecostofknow
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by m31415 8y ago
Chromatic aberrations cannot be removed using a material of just one refractive index. And as the video shows this lens has chromatic aberrations.
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by m31415 8y ago
Why is this surprising at all? Any transparent material having a refractive index larger than air can be made to work as a lens. Pinhole cameras are much more interesting than this -- there the phenomena isn't refraction. An even more