xkcd

Tub

That then raises the question of refining our definition of “creates more”—do we consider the creation of a small number N minds which then reproduce P offspring as being the same probability as the de novo creation of N+P minds? You don't calculate the chance of an organic brain appearing. You cal...

Tub

This could be perfectly harmless, if your total average throughput matches what the disk supports. In a perfect world, network speed would adjust to disk speed, but several layers of buffers and queues may prevent that. IIRC there are a few procfs/sysctl knobs you can try to influence dirty page han...

Tub

I have a few more recommendations that I have enjoyed with my partner. * Stardew Valley. It recently got a multiplayer update. * Heroes of Hammerwatch. Very fun roguelike dungeon crawler. * Victor Vran. Action RPG with an approachable combat system. Has a rather clicheed story but excellent storytel...

Tub

Story time. I once bought a bunch of cheap DHT22 sensors to measure temperature and humidity at home. They're digital, "no calibration needed", yet no two sensors would agree on a value. IIRC the largest span was a difference of 10% humidity, which can be the difference between "you n...

Tub

EDIT: completely unrelated, but in modern C++, what is the consensus on defining inline functions in header files: good practise or bad? .cpp file: "Eh, I guess a really smart compiler could still inline it" .h file: as inline "I trust the compiler to make a good choice. The linker w...

Tub

The ABI's consistent If that is the case, then you'd expect v1 to be a symlink to v2, and you wouldn't have this trouble. If you wish to override a vendor-supplied binary, you can use LD_PRELOAD to make app use your system's v2. "foo" and "bar" are C (and we can compile both). H...

Tub

my intuition tells me that "bad things" could happen. That is a reasonable default assumption. If you wish to dive into the inner workings of symbol resolution, read this: https://akkadia.org/drepper/dsohowto.pdf >> Are there two instances of "foo" loaded? Yes. Unless they're th...

Tub

There are a bunch of nice css transforms, powerful enough to create a full animated 3d layout, if you like. When clicking somewhere, the browser will reverse those transforms, accurately determining which element was under the mouse pointer at the time of the event. At the same time, the browser wil...

Tub

More can be added as needed, of course (-pthread always works with my preferred configuration, and I'm not going out of my way to test vastly different configurations until someone else hits a snag). That seems reasonable. If you take a closer look at that SO thread you linked, you'll notice that t...

Tub

clang generally does not require -stdlib=libstdc++. That SO link is quite old, and the runtime error suggests that the then-recent version of libc++ simply lacked support. I think the autotools way would be to attempt different configurations until one compiles and works (starting with no parameters...

Tub

Jose, if you really wish to make the point that string concatenation is fine for html creation, please start by implementing that clean() function that you keep using, such that it produces correct and safe html in any case. Multiple people have explained to you why that's problematic, but you've ig...

Tub

Because $start+$middle+$end could contain a $middle that accidentally closes a tag in $start? Creating html via string concatenation is bad for the same reason that creating database queries with string concatenation is bad . One leads to XSS attacks, the other to sql injection. The same problem ex...

Tub

On the topic of "making wrong code look wrong", the two things that look wrong when I read the article are: * using string concatenation to generate html * cleanup code outside of a destructor or finally block Clean code is a rather subjective and debatable thing, but in this case I'd rath...

Tub

For reference: https://en.wikipedia.org/wiki/Three_Laws_of_Robotics As you'd expect, if you try to boil down a legal system into three simple statements, there will be loopholes. The three laws don't deal with conflicting human commands, they don't resolve all the moral dilemmas involving train trac...

Tub

But if you looked at another planet and saw it was in a low entropy state, wouldn't your conclusion be that most likely life was on there? You snuck in a claim here, implying that earth has the lowest entropy of the planets in the solar system, because there's life on it. As far as I can see, our a...

Tub

I'll ignore all the unrelated and unscientific drivel about gods for now.. I'm a bit burnt out right now so these are not the clearest thoughts, but it seems intuitively wrong to me that specifically a fully-formed brain having (illusory) experiences or memories of a universe like ours is more likel...

Tub

If you want to draw it yourself, recursively printing each node and its children with indentation is easy, like sin / + * alpha 2 5 57.29577951308232 For some actual graphical output, use a library. My favorite tool for graph drawing is graphviz; it does have a javascript port. d3 is also popular. A...

Tub

So i read the wikipedia page on boltzman brains, saying that self-aware observers are probably spontaneous fluctuations. If our universe is in thermal equilibrium, with any low-entropy structures arising as the result of random fluctuations, then most observers would be bolzmann brains. That's a bi...

Tub

Did I do good? You're mixing std::endl with "\n". The standard does not guarantee those to be equal. It's not going to be portable to my upcoming operating system, which uses utf8 emojis instead of ASCII control characters or ANSI escape sequences. Otherwise, I see no portability issues. ...

Tub

You know, OP requested C++, so why don't you post C++ solutions? #include <iostream> #include <stdexcept> // We need to model the positive integers in a portable and standard compliant way. // We chose to use Peano Numbers for the following reason: // * There are no overflows, hence there's no undef...

Tub

A shell can only do very limited selection, because it isn't a terminal. It simply doesn't know (or care) what's on your screen at the moment. A shell can only copy parts of the current command line - and even bash can do that. It'll go into a bash-internal buffer though, so you cannot copy/paste be...

Tub

Step 1) write down the requirements in a precise, mathematical notation Step 2) write the theorem down in a precise, mathematical notation Step 3) be understood. I think you're thinking about something that can be proven, but what you've written is ambiguous nonsense. The first step to tackle the pr...

Tub

Contest Time! Write a one-line shell command (80 char or less) using all of grep, sed, and awk that actually does something recognizable. Prizes will be given on the basis of both style and output. Points taken off if the output is useful. Judges' determination of "useful" is final. Here'...

Tub

One more point I wish to make. We've talked about the low-level details, but we also need to consider the proper top-down approach. This is based on a few year of experience developing games, and inheriting projects from other people developing games. MVC is a good thing. Even if you're just running...

Tub

Disclaimer: good design is more of an art than a science, and anything that's not a technical requirement is highly subjective. Strive for consistency. First of all, Player::tackle(Player &) should cause the 'this' player to tackle the player passed via parameter, never the other way around. If...

Tub

Is there any school of thought that says "Look, we currently have very-little-to-no idea what it is like inside a black hole, in physical reality, so the question is unverifiable either way and therefore meaningless." ? We have zero experimental evidence about the inside of a black hole, ...

Tub

Errors coming from one module typically indicate a particular failure, usually handled by just waiting for a device controller (represented by mod_1_object) to auto-restart and trying again. "typically"? Is there an exception that cannot be handled by retrying? Exceptions for invalid argu...

Tub

Also, you're supposed to put the BWT before your RLE. Why RLE first? bzip has two RLE steps. RLE -> BTW -> MTF -> RLE Both RLEs have different encodings and maximum run lengths. The first one is supposed to guard against worst-case inputs; due to its inefficient (but fast) encoding it will actually...

Tub

I've done some benchmarks. const LOOPS = 10000000; const ITERATIONS = 10; (function() { const PROP = '_private_data'; let o = {}; bench('prop-single', function() { o[PROP] = { a: 1, b: 1 }; }, function() { let p = o[PROP]; let sum = p.a + p.b; p.a = p.b; p.b = sum; } ); console.log(o[PROP].a); })();...

Tub

I'm aware, but being collision-free and non-enumerable is enough to prevent accidental bugs when multiple separate modules mess with the same object. You can access or change private members in Java with the reflection API, but we still consider them private. You can mangle symbol properties in Java...

Tub

Has anyone found a valid use case for a WeakMap in JavaScript? It's supposed to prevent memory leaks, by allowing you to attach data to objects without leaking the data. The example for a key is often a DOM element, because those tend to disappear every now and then. let wm = new WeakMap(); let e = ...

Tub

psst… use a run-length encoder first. Backreferences are just as good as run-length encoding, the limit here is that common implementations (zip/gzip/deflate etc) have a fixed bit-size for the "length" parameter. For example, a backreference in DEFLATE is at least 24 bits long but has jus...

Tub

Each step is a transformation of a 2-vector (a, b) into a new 2-vector (a+b, a). This is a simple linear transformation, so you can find a 2x2-matrix M such that M * (a, b) = (a+b, a) = T(a, b) Repeated application of a linear transformation is simply repeated multiplication T^n(a, b) = M * M * ... ...

Tub

But there is no trivial assignment at the start. If the assignment w2={j1} is tried, then no solution is possible. w1={j2, j5} w2={j1, j4} w3={j3, j6} I'm a bit short on time right now, so that's all I'm going to add. Implementing the algorithm might find us a better counter-example. This just scre...

Tub

Your reduction is invalid - you cannot "add a vertex of the worker's color"; the coloring problem starts with an entirely uncolored graph. We don't know the complexity of your variant of the coloring problem - adding constraints can both increase or decrease the complexity. Doesn't matter ...

Tub

(Besides, I can write "Graham's number" on the back of a postage stamp. How big could it be?) Roughly twice as big as 1e340, because I can write 1e340 on the back of that stamp twice. :roll: There is probably some plank minimum number of joules below which the concept stops making sense (...

Tub

That last image eloquently illustrates one of the problems inherent in a 2 dimensional world. The only option for the poor surface folk is to attempt to outrun the pole or find an underground bunker instead of simply stepping to the side. They can't really outrun the pole when there's an unpassable...

Tub

You could spell out your information will 2mm ballbearings on a huge flat floor, like a warehouse. Men in Black come calling? Just tilt the floor by a degree or two. a suspicious pattern of dust-free spots emerges on the floor. You really need to turn that warehouse upside-down and shake it a coupl...

Tub

If your build system is as simple as "compile every single file in this directory into an executable", then a simple Makefile will do. See here, for example . This has minimal dependencies, but isn't easily portable to toolchains that don't use gcc/clang's command line syntax. For example,...

Tub

Technically , nothing a person does can actually destroy information due to the Laws of Thermodynamics. Being true to the comic, everything following "Technically" is complete nonsense. As far as I know, you still cant beat one-time-pads for secure encryption. All asymmetrical cyphers rel...

Search found 409 matches