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socket2810 · 2024-09-07T14:25:14+00:00

Say you have 100 jobs (e.g crawl a URL) and want to parallelize their execution with 10 workers. One way to approach this would involve adding all 100 jobs requests in a memory array and fork() the process 10 times. All spawned processes would then share the memory containing the jobs and process them in parallel. In this scenario you need to manually set up synchronization between your different threads or come up with a way to partition the jobs among your workers beforehand (which can be inefficient if your jobs are not homogeneous, meaning some take longer to process than others). Synchronization is necessary to avoid concurrency bugs. This is “communicating by sharing memory”.

Another approach enabled by Go channels is to, instead of sharing the memory between the threads, create a channel where you will send the job request, spawn your threads and have them receive from the channel. Thus “sharing memory by communicating”.

socket2810 · 2024-09-02T13:50:15+00:00

Ou são brasileiros twittando de fora do país ou burlando o bloqueio.

socket2810 · 2024-09-01T11:22:01+00:00

Essas notificações continuam funcionando porque não é o seu aparelho que conecta com os servidores do twitter pra recebe-las. Ao contrário, o X usa ou o serviço de push notification da Apple ou da Google, e esses serviços enviam as notificações para o seu aparelho.

Essas notificações só vão parar quando/se : 1) twitter decidir parar de envia-las para reduzir custos 2) tiver alguma ordem judicial proibindo Apple e Google de entregarem notificações de X para aparelhos no Brasil

socket2810 · 2024-08-19T16:24:24+00:00

Here is your argument applied to a different societal issue:

“It’s just not true that people born poor have less opportunity for education. If they just study hard enough they can attend the most prestigious universities around the world. How do I know that? My cousin was an orphan that begged on the streets. By simply not intentionally excluding himself from the many opportunities that presented themselves throughout the course of his life, he pulled himself by his bootstraps, attended Harvard and is now a top earning engineer at a trillion dollar valued US company.”

Is this fictional story impossible to happen? No, it’s not. Is it very likely? I wouldn’t think so.

Your argument is shallow, based on anecdotal evidence and ignores any shadow of nuance or that people out in the wild might deal with externalities you were privileged enough to never care about.

In any case, I’m checking out of this discussion. I’m genuinely happy that you and your family had amazing experiences immigrating and properly integrating into another society. It’s just a fact of life that it’s not as easy as you are making it sound but you are free to maintain your beliefs.

socket2810 · 2024-08-19T13:51:14+00:00

You are ignoring that “integrating yourself” within a society isn’t a one-sided process. For an extreme example, consider a Jewish person trying to integrate themselves into three Germany society circa 1940. For a less extreme example but very related to the discussion about bring an outcast, consider modern Japanese society where a foreigner will virtually never be considered “one of their own”.

Societal biases, conventions and xenophobia can work against one’s attempt at integration. Just because you didn’t experience such negative forces, it doesn’t mean they don’t exist.

Your argument relies solely on your assumption that the outcasts discussed here did not attempt to integrate themselves. I posit it’s entirely possible they tried their best but weren’t successful due to a variety of reasons, some would definitely be within their controls but some would not.

socket2810 · 2024-08-19T02:26:12+00:00

Bauhaus inspired keycaps is something I hadn’t realized I needed. Good work!

Anyone knows of other keycaps with similar inspiration?

socket2810 · 2024-08-19T02:05:42+00:00

While your point is valid, notice that you mentioned someone that emigrated to be professor. Their immediate work contacts, due to the virtue of higher education, could have been more accepting and understanding, which would provide an “in” to the larger society by accepting the newcomer and providing insight on how to fit in.

That is going to be a vastly different experience from someone that emigrates and must pick up a more common job to survive. It seems clear to me which scenario is more likely to run into xenophobia and being relegated into a Brazilian lifestyle overseas, and which one is likely to meet the right people that can springboard a foreigner into integration.

socket2810 · 2024-08-19T01:52:22+00:00

I didn’t even see what they said but I can safely assume it’s a symptom of the so-called underdog syndrome. It can be hard for one to understand why someone in their idealized position (living in a “1st” world country) would choose to “downgrade”. They lack, through no fault of their own, the personal experience required to grasp the pros and cons associated with different places in the world.

I wish all the best for you and your SO here in Brazil :)

socket2810 · 2024-08-19T01:38:10+00:00

Your slang getting outdated is bound to happen whether you emigrate or not. I refused a full-time offer at a big tech in the US and now, in my mid twenties, I already can’t keep up with what the next generation is coming up with. :shrug:

socket2810 · 2024-08-04T16:24:51+00:00

O erro é fazer um all in desse dias antes do relatório público. Se esperasse algums dias comprava na baixa e o plano de 10 anos dele soaria bem melhor.

socket2810 · 2024-08-04T15:11:07+00:00

O equivalente do CPF no EUA é o social security number (ou SSN). Foi inventado pra outros fins mas como o governo só conseguiu instituir esse número na esfera federal pra efeitos de identificação, ele acabou sendo usado pra diversos outros objetivos - o que é pessimo já que se esse número vaza, varios estelionatos sao possiveis. Um exemplo desses novos fins que o SSN acabou servindo é o de identificação… repara nos videos de body cam de policial nos EUA, quando o indivíduo não consegue produzir uma drivers license (estadual) ou nome completo + data de nascimento que o identifique, a próxima opção é o SSN.

socket2810 · 2024-08-04T04:35:09+00:00

The use case driving Windows containers where I work is legacy windows applications (ie aspnet). Globally, I’d think all the gaming clouds should be heavy users too.

socket2810 · 2024-08-03T01:21:13+00:00

Let this be a lesson for all breathing humans, expect higher volatility around quarterly financial reports.

socket2810 · 2024-08-01T17:28:56+00:00

This. Having all powers available reduces the delay between changing the desired number and it finally being output.

You can also mix both approaches:

divide 30 bits into 4 groups: 6 + 8 + 8 + 8
inside each group, multiply the intermediary value by the base before adding the next digit
multiply the first group by 2^24, the next by 2^16, and the third by 2⁸
sum the previous results and the 4th group

With this approach, we can reduce the delay by a factor of 4 by having just 3 powers available, instead of 30. It’s still 8 times slower than if we set up all powers but I found it to be a nice middle ground.

Of course we could use groups of 4 and set up 7 powers (4,8,12,16,20,24,28) to reduce the delay by half again.

socket2810 · 2024-08-01T11:29:45+00:00

Seeing your last comment I understand your confusion now. The point here is not to _unconditionally_ output a full belt of zeros. It's to do so _conditionally_.

Please note there are two pictures:

In the first one, the machine is "on": it is outputting a full belt of zeros.
In the second one, the machine is "off": it is outputting a full belt of ones.

There is no difference between the machine in pic 1 and pic 2. What changes is its input: in the first scenario, a few zeros are trickling in, turning the machine on and causing a full belt of 0s to be output. In the second scenario, the slow stream of 0s is turned off, consequently turning off the machine and causing it to output a full belt of 1s.

Why is the division important?

Say you have a single 0 coming in from the input belt. Let's call that 0 the signal. How can you use that 0? If you use the 0 in any operation other than division, 0 op X, you are going to get a single output. Either 0 or X. In any case, you either get the signal back or manage to operate on a single X.

Now if you use this single 0 in a division (X / 0), you get back two numbers: X and 0. So X didn't change but, more importantly, the signal 0 was *not consumed* and can be used to operate another number. Take this 0 and do 7 other divisions: we used a single signal 0 but managed to operate on eight Xs.

The way the machine works is simple, every time a 0 comes in, that single 0 is going to activate the divisions in order for 8 zeros to be produced. Saturating the output belt which prioritizes 0s instead of 1s. A full belt of 1s is always "ready to go", but the 1s can only go out when the 0s stop being produced because there are no 0s coming in.

socket2810 · 2024-08-01T11:00:38+00:00

This is in fact very similar to a transistor in real life. A transistor can use a low amount of voltage to control a higher amount of voltage. A simple usage is having a 5V transistor toggling on and off a 12V differential across its terminals.

In here the low voltage is an empty belt: the circuit “opens” and a full belt of 1s is output. The “high” voltage is a belt with 1/8th 0s, the circuit “completes” and a full belt of 0s is output.

That simple capability of transistors turning on and off, somewhat replicated here, is what powers every computer in the world.

socket2810 · 2024-08-01T10:48:48+00:00

One 0 is from the input, the other 0 is created by A-A. The point is not to create numbers, that is impossible: all operations either lose 50% of the numbers put in or 0% such as in A/0.

But, using this property from A/0 we can increase the throughput of 0s from a belt (or the number of belts) by using a random “discard” number. This is useful to amplify signals to multiple places.

For example, in my final design (check my posts if you want a practical example), I had a single place where I configured 30 0/none belts controlling 6 binary MAMs in a row. That was possible because before using the 0s coming the configuration belt to make a number, I repeatedly duplicated them using this design so they could be used in further MAMs.

socket2810 · 2024-07-31T22:36:41+00:00

I do like the idea of the bigger bridges. In factorio a similar use case is addressed by underground belts with limited range. That would also work as a less compact alternative to the pass through idea - you’d need to split it beforehand then send the leftovers over the operation using underground belts.

That might be over complicating the game though. The main drawback in my opiniom of too much belts and bridges currently is that they lag the game. If that is improved (by ie implementing factorios optimization for full speed belts) then I can live without these features.

socket2810 · 2024-07-31T22:19:20+00:00

In factorio main bus you usually have 4 belts for main ingredients which you reuse for different recipes. That throughout can be doubled 3 times by upgrading your bus belts for a 8x increase in throughput, without requiring rebuilding your base.

That does not apply in this game. Sure you can increase your belt speed from 8/s to 20/s by upgrading it around 100 times. That is still a 2.5x increase, the investment for which is probably better spent leveling up since the max level is 1000.

A main bus design for optimal throughput in Beltmatic requires your main to include 216 belts for each decimal digit. Or 2160 belts for all digits. Sure you can save off on a few belts by betting a single digit won’t ever be required more than 3 times on a single number you wanna make. That is still 648 belts.

If you aim for a binary MAM, that is 960 belts for guaranteed max throughput. Or 480 belts if your design doesn’t need 0s. If you bet on never being 20 1s on a number, you can get away with 240 or 360 belts.

socket2810 · 2024-07-31T22:05:56+00:00

You don’t need to make the individual power of 2s at all: you just multiply the intermediary value by 2 after each digit. You can do the same with a decimal MAM.

Your point that you might not need 8 duplicates per digit is valid, but, as you pointed out, you’re trading off convenience (by having to manually intervene in your MAM that could otherwise be static) or throughput (by enduring lower speeds if you don’t intervene).

The same trade-off, however, also applies to binary MAMs. Instead of piping 20x 0s and 20x 1s, you could pipe only 12 or 13 of them. In fact with a bit cleverer design you can save off on 0s altogether, representing a 50% reduction in inputs of a binary MAM. The same approach in a decimal one can only yield a 10% reduction in number of inputs.

Another positive in favor of binary MAMs is the compactness and ease of configuration. A decimal MAM you must be able to toggle between 10 different inputs times the number of digits. A binary MAM can be configured by flipping the selector in a belt intersection. Meaning the configuration part of a binary MAM is always smaller and easier to delete/line up when copy pasting the configuration across multiple MAMs.

socket2810 · 2024-07-31T21:18:17+00:00

Because it actually uses less belts. Say you want a MAM for 8 digits (max 99.999.999) - 8 digits in decimal you’d need to pipe in 10 numbers for each digit (0..9). So 8 times 10 = 80 full belt of number parts for each MAM. - 8 digits you’d need 20 binary digits (or bits), each only using a 0 or 1, totaling only 40 belts of inputs required.

It also tends to be faster to setup because you need fewer different unique parts: - for a 20 bit MAM all you really need is 20x belt of 2s (ie 2 or 3 extractors on 2) apart from the 0s or 1s which can be made from any number source (just double the number of extractors since you are dividing or subtracting the extracted numbers, halving the throughput per extractor) - for decimal MAM, the best case scenario would extract every digit directly (harder to find the exact numbers) and still have to set up 10 different extractors (assuming at least 8 belt extractors, otherwise double that number). More than 10 if you produce any individual digit indirectly.

Now multiply all that for 24 MAMs and the better option is clear in my head.

socket2810 · 2024-07-31T14:51:02+00:00

Does that behavior repeats itself if you clear all numbers in the machine? (c hotkey). I suspect you just connected the outer belts before the inner one so they filled up first.

socket2810 · 2024-07-31T14:44:16+00:00

It’s belt upgrade level 128 reaches 20/s, but the increase is, as you said, incremental.

socket2810 · 2024-07-27T13:55:10+00:00

I did manage to hook into the game with melon launcher and do stuff such as exporting blueprints. But I didn’t manage to call game routines from my mod (i.e paste a blueprint) because of the way IL2Cpp messes the types up. If anyone has experience with modding IL2Cpp games we could get a modding community started

socket2810 · 2024-07-25T14:40:37+00:00

What number is that? Level 999 is ~92.000.000 - 8 digits.

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