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/tech/ - Technology

"Technology reveals the active relation of man to nature"
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File: 1608526303623.jpg (50.24 KB, 400x579, SICP_cover.jpg)

 No.5079[Reply]

I'll start with a pretty obvious one.

It's pretty good, don't let the hundreds of unfunny and unoriginal edits of anime girls holding it make you think it's just a "meme".
60 posts and 16 image replies omitted. Click reply to view.

 No.10933

>>10923
https://wingolog.org/archives/2009/03/24/international-lisp-conference-day-two
> The "debate" had an interlude, in which Costanza asked Sussman why MIT had switched away from Scheme for their introductory programming course, 6.001. This was a gem. He said that the reason that happened was because engineering in 1980 was not what it was in the mid-90s or in 2000. In 1980, good programmers spent a lot of time thinking, and then produced spare code that they thought should work. Code ran close to the metal, even Scheme – it was understandable all the way down. Like a resistor, where you could read the bands and know the power rating and the tolerance and the resistance and V=IR and that's all there was to know. 6.001 had been conceived to teach engineers how to take small parts that they understood entirely and use simple techniques to compose them into larger things that do what you want.
> But programming now isn't so much like that, said Sussman. Nowadays you muck around with incomprehensible or nonexistent man pages for software you don't know who wrote. You have to do basic science on your libraries to see how they work, trying out different inputs and seeing how the code reacts. This is a fundamentally different job, and it needed a different course.
> So the good thing about the new 6.001 was that it was robot-centered – you had to program a little robot to move around. And robots are not like resistors, behaving according to ideal functions. Wheels slip, the environment changes, etc – you have to build in robustness to the system, in a different way than the one SICP discusses.
> And why Python, then? Well, said Sussman, it probably just had a library already implemented for the robotics interface, that was all.

 No.10936

>>10932
Bootcamps cost as much as university and give a worse education. IF you're going to skip university just teach yourself instead of paying for a bootcamp.

 No.10938

>>10936
> Bootcamps cost as much as university
Do they? Then why would anyone take them?

 No.10941

>>10938
because they're shorter than university and are used by adults doing career switching who don't have time to go back to school

 No.11138

Anyone have any recommended books on online surveillance & privacy? I've become real paranoid about this stuff lately so I'd at least like to be well informed if it's going to drive me nuts.


File: 1630964531349.png (43.78 KB, 800x640, 800px-X.Org_Logo.svg.png)

 No.11103[Reply]

How do you laugh at win users for security when we use shit like pic related?
15 posts and 1 image reply omitted. Click reply to view.

 No.11131

>>11116
>lmao, and what exactly could windows even hope to offer to the linux kernel that's actually useful?
Not fucking freezing when doing heavy io?

 No.11133

>>11130
>Windows xp is already leaked
Is it like a documented code base or just naked source code ?
How much legal terror do people have to dodge to work on something like libreXP ?
And can you make it work on modern hardware ?

 No.11134

>>11131
werksforme

use the cfs scheduler and ionice.

 No.11135

>>11134
*cfq scheduler

 No.11136

>>11135
ah, it seems they replaced it with bfq.


File: 1631073644657.jpg (313.81 KB, 1536x1536, oq5yiyoyqxhz.jpg)

 No.11127[Reply]

I'm tired of modern tools just utilizing only electrons, protons and neutrons, and photons. What tools and designs do you have info on or that you made yourself that can extract different particles like phonons, antimatter particles, force carrier particles or even make substances undergoe nuclear transmutation through pressure and heat?

 No.11128

Here's a way you can experiment with nuclear fusion at home.
https://makezine.com/projects/nuclear-fusor/

 No.11129

>>11128
Yeah it's called compressing garbage in a single space until the internal heat from all the atoms bouncing into each other and not being able to diffuse into their environment starts setting off fusion reactions. What I'm asking for is how do we utilize more than just the standard electron, photon, neutron and proton set of particles humanity uses on a consistent basis

 No.11132

>>11129
https://en.wikipedia.org/wiki/Muon_tomography
https://en.wikipedia.org/wiki/Weyl_semimetal


File: 1630384736287.jpg (116.52 KB, 1200x1785, 1200px-Batterydura.jpg)

 No.10937[Reply]

How do we make longer lasting and even more powerful batteries?
4 posts and 1 image reply omitted. Click reply to view.

 No.10976

>>10964
Smart idea

 No.10978

>>10964
If they're recyclable I'm all sold, but if you have to change your car's batteries every week the trash will reach outer space

 No.11084

>>10937
https://en.wikipedia.org/wiki/Solid-state_battery

 No.11085

>>11084
Allegedly coming "in the next year" for decades now.

 No.11092

>>10937
>How do we make longer lasting and even more powerful batteries?
research

>>10939
>light weight
>high capacity
>long lasting batteries
>cheap
anon I

>>10964
you can "recharge" them by electrolysing the resulting alumina back into aluminium


File: 1624167488802.jpeg (7.54 KB, 293x172, hands.jpeg)

 No.9462[Reply]

Why does Rust get hate here? I know its a memed language but is there any good reason not to use it other than be contrarian?
29 posts omitted. Click reply to view.

 No.10965

>>10958
It's because people against rms are hipsters while those supporting him are poseurs.

 No.10966

>>10965
>python
>poseur

 No.11049

>>10958
>How's that? Anyone else feel like it's obvious that lang preferences would be distributed like that?
I think it depends on the priorities and motivation of the people who build the language tools and those who use them.
GNU C and Python were very steeped in free software culture from the start and free OSes like Linux were the primary platforms for their use, so the community that grew up around those is very supportive of RMS and believes strongly in what he is trying to achieve.
Stuff like Rust and Rails (Ruby community is miniscule compared to Rails) were mainly developed by companies like Mozilla and Basecamp and they had zero interest in what RMS had to say beyond using the free software tools that were available. So the community that grew up around those doesn't care about free software. You could say the primary platform for Rails is Macs more than Linux and I suspect Rust is pretty much the same because of their use of LLVM.
So it probably has to do with the ideals of the people who made and used the tools in their early stage of development.
I really enjoy programming with Rust, but the "community" around it is pretty much Twitteroid programmers and their groupies and best avoided.

 No.11058

>>10949
I don't think the language used in the implementation of the compiler has ANY impact on the language it compiles. The language design (usually) is done before even a lexer is written

 No.11073

>>11058
It does influence how the language is compiled, its internal data structures and its function primitives. But more importantly if, we return to the example of fasm, it would only need to interact with code compiled from C during runtime, yet the lowest level of high level programming would still gravitate towards C-like patterns, because widespread modern hardware is for all intends and purposes "built to run C", meaning imperative code with variables of wordsize or below and continuos memory access, thanks to the bottleneck of read/write operations through a memory bus. http://www.loper-os.org/?p=46
Optimizing for hardware reifies its bias towards this programming pattern, even more so with POSIX compatible software. I programmed in C, so I cannot unsee.


File: 1628206484026.png (205.89 KB, 720x1498, energy.png)

 No.10606[Reply]

So how does humanity extract more energy?
26 posts and 6 image replies omitted. Click reply to view.

 No.11062

>>11061
I'm not aware how good dams are, but nuclear is the greenest energy we have.

 No.11063

File: 1630852365012.gif (1.21 MB, 640x360, bertie_dakota4.gif)

>>11048
>why? why doesn't this work on earth?
it does and it is orders of magnitude easier to do on Earth

>>11061
you can use pumped hydro with both solar and wind, retard. also solar is highly predictable. if we build a good enough long-distance grid (think 10 MV or more) then we can literally have 24/7 solar power everywhere

 No.11064

>>11034
all in all, your post is pretty heavy on the liberal ideology. You place our current way of living as the one with no coercion, and then say that people can just "abstain" from it - both are very false, on the first account because people have had to have this way of life forced on them for the development of productive forces lead by greedy capitalists, and on the second account because the problem is obviously not just my own personal amount of energy use, but the impact it has on the state of our whole world. Imagining that "business as usual" is neutral and can't be transgressed against without you being an villain, and that social problems can be reduced to individual consumption/abstention, is peak ideology.

so, self crit comr8

 No.11065

>>11062
nuclear is pretty good, france produces >80% of its power that way.
keep in mind it is dangerous and you need to get rid of wastes
>>11063
>pumped hydro
this has to be the funniest meme I have read for a while, there's no such thing as decent energy storage for big scale projects.
>if we build a good enough long-distance grid (think 10 MV or more)
10 MV? assuming you meant 10 MW, it's still negligible considering the average nuclear plant

https://en.wikipedia.org/wiki/Fessenheim_Nuclear_Power_Plant

Solar doesn't produce enough AND is more polluting considering manufacturing, maintenance…

 No.11068

>>11065
>keep in mind it is dangerous and you need to get rid of wastes
The waste of nuclear is less harmful than fossil fuels tbh. And new gen reactors can utilize near 100% of uranium fuel from what I heard.


File: 1608526260021.gif (588.77 KB, 200x116, 160038497950s.gif)

 No.4703[Reply]

Thread for creating and sharing and discussing ACSII art.

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34 posts and 1 image reply omitted. Click reply to view.

 No.11042

>>11041
ah there's a code bbcode tag

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                %%%SS%[email protected]%XSXSSS8XXX888                                      
              8ttX%[email protected]@XSXXX%%SS%@X8SX                                     
            S%%S%XX%%Xt%[email protected]%%[email protected]@%XS%SStS88%                                     
          8S%@StS%X%@[email protected]%%S%SS%t%%@%%[email protected]                                     
          XtttXtttStXt%S%XS%S%St%S%tXStXS%%                                     
           @t%SSt%%SX%%%%%SX%%%StttSX%%%tSSS                                    
            8XttSX%XtSX%@XX%SXX%StS%%t%%%%%8                                    
            8%%@[email protected]%[email protected]@tX%%t%t%%t%%SS                                    
             8XSXt%[email protected]@SXX%tXt%%%%S%%%X%%%tS                                    
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              StX%X%8XSSX%%@%X%XtXt%SX%S%%%S%88X                                
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 No.11043

>>11042
getting better at using aview

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 No.11044

>>11043
this is fun
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 No.11045

>>11044
here's my workflow for those wondering:
1) open image in gimp, paint black over any background crap. sometimes inverting the image first works better
2) save as .pnm
3) aview -driver curses filename.pnm
4) press u238 to turn off any ANSI control codes
5) press left to adjust the image left
6) adjust contrast (.,) gamma (';) and brightness (<>) until it looks good
7) copy-paste text to where you want it. don't bother with the save functionality unless you need HTML output or something

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 No.11047

>>11045
last one for now

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 No.9052[Reply]

I fucking hate that non-smart TVs simply stopped being made and the "best" there is is fucking 1366x768 crap.
5 posts omitted. Click reply to view.

 No.10972

>>10956
if he want a 4k sized TV,a monitor is way too pricy for that size.

 No.10974

I'm unironically going to just by a larger computer monitor screen. TV here offers me nothing I can't get for free online. Legally, not that it matters.

 No.10975

>>9054
fuck, I had no idea

 No.11032

>>10971
<Mike Van Lier, Director of Consumer Electronics at Samsung South Africa, explained:

<"In keeping with our values to leverage the power of technology to resolve societal challenges, we will continuously develop and expand strategic products in our consumer electronics division with defence-grade security, purpose-built, with innovative and intuitive business tools designed for a new world."

i want off the ride

 No.11038

>>11032
Remember when TVs were too stupid to do anything other then draw scan lines in real time and tune to signals.


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 No.10985[Reply]

So, if one of the weaknesses of our surveillance state is that there have to be people to sift through information, is it possible to flood info to the point where the effectiveness of the eye in the sky is diminished?
19 posts and 1 image reply omitted. Click reply to view.

 No.11005

>>10999
>>475658
They aren't doing very well defending against anti-lockdown protesters, some of whom actually said on the news I think that they wanted to use covid as a biological weapon in hoping they can spread it.

Is Australia's government actually willing to do what needs to be done to stop those people and save themselves or will they let it keep growing and get overrun eventually? They seem to be failing hard.

They still haven't got them all.

 No.11006

>>11004
What is there to elaborate? Binary search is a searching algorithm. It tells you if a certain element is in a collection or not. Filtering gives you all the elements that match a given criteria. They are different problems.

Binary search is effective because when it inspects an element, it can reduce the search space by assuming that all elements smaller than the current element are before it in the collection, and all elements greater than the current element are after it in the collection. This is only true if the collection is sorted according to the key you are searching for.

 No.11011

>>11006
Just appending new data to a flat file would be stupid, if you're searching for keywords it would be trivial to maintain an index as the data gets collated

 No.11012

>>11000
>aren't these agents told who the other agents are ?

after reading a few books on infiltrators and snitches, basically no. Also you have to look out for paid corporate informants/provocatours. Which is ridiculous but hey, gives more opportunity to try out anon's idea. Though i'll say that you'd probably get yourself way more surveilled by doing that than by just not fucking with cops in the least when you can help it.

 No.11013

>>10985
i think this is basically the dialectical way to deal with it. But like others say, your noise has to actually be able to be confused with genuine data, and this is always going to be a cat and mouse game. But yeah the right mindset is how to waste government resources on stupid bullshit so they either waste their time (and are potentially demoralized also) or so they become desensitized or stop giving a shit about certain patterns.
I recommend you go break into your neighbors house and call 911 for a rape dungeon in their basement ;)


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 No.8005[Reply]

Functional programming was a craze.

I've learned scheme and common lisp and scala and haskell in classes at uni/grad school and although in the 2010s the functional programming craze was huge eventually it died out and people just decided that low level languages like go and rust were better and that even java could be good if you add lambdas and first class functions/function objects to it. I was a full on FP cultist from 2010 to like 1-2 years ago.

After writing actual functioning apps in functional languages I've concluded that old fashioned OOP/java and now low level multi paradigm languages like go are probably better than the languages like clojure or haskell which force functional style and take up huge amounts of memory due to immutable data structures, despite the compiler writers best efforts. The concurrency benefits can simply be gotten by adding a few functional features to mainstream languages which they have already done, for example, C# and Java. Although C# does it way better imo.

I see literally no reason to write an app in haskell, clojure, scala, etc. over basic Java/C# or rust/golang
26 posts and 2 image replies omitted. Click reply to view.

 No.8435

>>8432
Prolog is not a functional language.

 No.8446

>>8411
>The reason people actually working in industry have been pushing FP meme and buzzwords like abstract type classes is because large problem domain that has been historically tackled within OOP framework turned out to be as easily 'approachable' in purely functional languages cheaply. Nothing more, nothing less.

except that a bunch of people in the 2010s didn't treat it like that, they acted like OOP was "BTFO", outdated, and that FP would cure cancer and world hunger. Saying FP is ok in some circumstances is not the same as subscribing to the cult of FP and the blogosphere of it and shit

 No.8451

>>8446
what exactly is the value of this post? If you have valid criticism of haskell or MLs or frameworks written in those languages (which there are many and poor heap management is not one of them) share it with your personal experience or analysis. Why do you want to talk about nameless bloggers?

 No.10944

>>8005
Here is a fact.
Functional programming languages are designed so that the compilers are forced to be extremely complex to get semi-decent performance. This is so that corporations can maintain control over software development. If you want to be truly free, you should use V or Zig

 No.10962

>>10944
>V or Zig
Never heard of those.
Pretty sure C is even simpler than those and it still has immensely complex compilers. There's of course tcc but would you want to use it if it offers no optimizations whatsoever?


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