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1. Numbered lists become ordered lists
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Constant of chain

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- Thu, 10 Sep 2020 21:50:38 EST fELRSK9p No.38972
File: 1599789038065.png -(11357B / 11.09KB, 997x375) Thumbnail displayed, click image for full size. Constant of chain
Where is the chain that isn't complete?
3 posts omitted. Click View Thread to read.
Fuck Chedgegold - Mon, 14 Sep 2020 21:59:58 EST tGM99VUd No.38980 Reply
Well don't keep us in suspense. Tell us what's wrong with your shitty Visual Basic code.

Non-Updating Window

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- Wed, 02 Sep 2020 19:02:48 EST Xs/GYNFy No.38956
File: 1599087768626.jpg -(1648034B / 1.57MB, 1600x1607) Thumbnail displayed, click image for full size. Non-Updating Window
I need to create this, but I'm not sure where I need to start, which is what I'm looking for. I'll be able to do it with the knowledge I have, I think, but I need to know what I'm trying to do (or Not Do, I guess.)

You know how when a window freezes in Windows, stops visually refreshing and just maintains whatever is placed over it? That's it. I just want a window that doesn't update, I think, and does that by design. I've noticed this occur in some SDL applications, like certain roguelikes, where the window will only update visually on a keypress, but I'm not sure if that's related in any way to that library.

This feels like it ought to be simple enough, so I'm hoping someone will be kind enough to point me in the right direction while I'm bumbling around trying to figure this out myself.
1 posts omitted. Click View Thread to read.
Nicholas Bassleforth - Thu, 03 Sep 2020 08:30:24 EST Xs/GYNFy No.38958 Reply
Yeah! Exactly. This is probably exactly what I needed. Thank you. I have some coding experience but I don't have a brain for terminology, so I didn't really know how to Describe what I was going for.
Isabella Barddock - Mon, 07 Sep 2020 20:02:30 EST UPgP6ijC No.38967 Reply
If you want to do it in a more "proper" way, you could make your window take a screenshot of the desktop, then set your windows image to the section of the screenshot that it's at.

How reliable is code.org

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- Sat, 28 Dec 2019 03:50:04 EST Wc5lXrBR No.38327
File: 1577523004019.jpg -(113641B / 110.98KB, 618x907) Thumbnail displayed, click image for full size. How reliable is code.org
Hello I'm new to programming and I just wanted to ask how reliable is code.org?
Also are the website in this image good?
User is currently banned from all boards 13 posts omitted. Click View Thread to read.
Hugh Hurryworth - Mon, 31 Aug 2020 04:02:04 EST HOSALti2 No.38953 Reply

yeah, what the hell was that bitchute site about? It looked VERY shady, I regret going there.
Doris Susslefoot - Mon, 31 Aug 2020 17:26:47 EST CVit1AP2 No.38954 Reply
Bitchute is an anti-censorship (read: small-n nazi) Youtube clone. Ostensibly the name refers to bittorrent distribution in addition to the central servers but this is a fake feature so it isn't even technically interesting. It will be a great source of a dox though when it inevitably gets hacked.
Thomas Herrykotch - Fri, 04 Sep 2020 04:57:57 EST 4Q4DkGKh No.38961 Reply
The fact that faggots who use that email service think

lol what is it with you faggots who think this service hasn't already been hacked? any public service out there that claims to be "secure" is either a honeypot or has been hacked by 5 eyes. Your a retard if you think otherwise.

Forum/Image baord Creation

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- Sat, 22 Aug 2020 18:01:19 EST qL+QCiK3 No.38945
File: 1598133679059.jpg -(277327B / 270.83KB, 1350x1450) Thumbnail displayed, click image for full size. Forum/Image baord Creation
I want to program my own image board from scratch but I don't know what programming language is ideal or where to start at all, really. What is the best tutorial or book out there on this topic that I can follow?
4 posts omitted. Click View Thread to read.
Augustus Buppertudging - Thu, 03 Sep 2020 22:45:33 EST ZJh08KPY No.38959 Reply
A lot of your problems are going to have to do with concurrency, so just let me nip something in the bud for you:

There is no such thing as parallel writes. There is no such thing as parallel writes.
Thomas Herrykotch - Fri, 04 Sep 2020 04:53:53 EST 4Q4DkGKh No.38960 Reply
there's already tons of free software for image boards on github. just download one you like from there and find a place to host it and your done. I have one myself but it's invite only and we trade nudes.

image downloader script

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- Tue, 21 Jul 2020 05:39:16 EST EAbyRGHS No.38823
File: 1595324356013.jpg -(1604134B / 1.53MB, 2592x1944) Thumbnail displayed, click image for full size. image downloader script
is there a script to download images from a thread? tried using wget, but somehow it managed to get icons too and duplicated them. ik there is one for 4chan, but 420chan doesnt.
2 posts omitted. Click View Thread to read.
BrU - Mon, 03 Aug 2020 22:32:27 EST 8L0F/N3I No.38879 Reply
It is not in the source section but the app worked last time I used Windows. It is a Windows application if that is a prob I have the source somewhere.
BrU - Mon, 03 Aug 2020 22:33:59 EST 8L0F/N3I No.38880 Reply
Btw I wrote the app many years ago when the 420chan API first came out.
Shitting Droshspear - Sun, 23 Aug 2020 09:24:59 EST 9poX9sii No.38948 Reply
I just spent half an hour reading up on the jq tool and writing this, thank me later OP.

The script needs the board name (e.g. "prog", NOT "/prog/") and thread_number (e.g. "38823") as the first and second arguments.


I'll paste it here as well, in case the pastebin dies for whatever reason:

# Dependencies:
# - curl
# - jq (for JSON object processing)

if [[ "$1" == "" || "$2" == "" ]] ; then
echo usage: $0 board_name thread_number
exit 1


echo "Downloading thread page at $thread_url"

image_names=$(curl $thread_url \
| jq '.posts|map(.filename + .ext)' \
| jq 'map(select(. != null))' \
| jq -r 'join("\n")')
Comment too long. Click here to view the full text.

Embedded systems

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- Fri, 05 Jul 2019 20:13:00 EST FnW9ut/o No.37903
File: 1562371980698.jpg -(46689B / 45.59KB, 445x473) Thumbnail displayed, click image for full size. Embedded systems
Whats it like to work in embedded systems? Is it based?
8 posts omitted. Click View Thread to read.
Ebenezer Sanningnun - Sat, 15 Aug 2020 20:42:16 EST Kp6JJW/x No.38931 Reply
That's pretty cool man. I am an electronics technician right now but am probably going to be changing jobs soon and or go to school for electrical engineering. I'm about to start making Arduino projects and am learning python.

I'd really like to make a portfolio of sorts to showcase the abilities I have considering I have no professional experience in the production/engineering field just technician work. Would you have any recommendations or directions for me?
Lydia Penningford - Tue, 18 Aug 2020 17:25:41 EST wvnnNh5T No.38935 Reply
If you're interested in learning embedded programming, knowing C is invaluable. Probably worth learning a simple assembly language too (6502 or PDP-11 are examples of old CPUs that have simple enough assembly languages that you can understand without studying for months).

As for what kind of project? Something you find interesting and easy to explain. I saw someone make some LEDs for his fishtank that look like lightning or sunshine or overcast or whatever the weather is outside. Maybe you want to make a robot that can sweep your floors. Or home automation. But it should be something that takes your fancy and which you can learn something from
Martha Buzzwill - Thu, 20 Aug 2020 18:53:02 EST Kp6JJW/x No.38938 Reply
Thanks I'll look into C. I was planning on working with python and an EMG for reading nerve signals. Ideally he goal is to work on subvocalization to text but I would be happy with gestures translated into some script.


Edabit Challenges Will HELP everyone!!

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- Tue, 04 Aug 2020 13:39:20 EST gCG4yvFE No.38889
File: 1596562760472.png -(78742B / 76.90KB, 1366x768) Thumbnail displayed, click image for full size. Edabit Challenges Will HELP everyone!!
Iggy the post that were auto formatted incorrectly by 420chan.
Just goto rhe w3schools link or study the screen shot I took for the working code.

BTW I did it the hard way.

Hope this is helps you in class my friend.

I prefer JS over Python for many reasons not only because it is the web standard because there are so many ways to do the same thing. Also I haven't coded much in Py.

My 3 fav right now have to be JS/PHP/C#, in that order. After that I would say VB because of the .NET framework like C# and C++ for .NET aka Managed C++ is not bad. Java because of its syntax is much like C# is good and It is good for Android projects.

Just pick a language that is widely used and master it. or else you will know alot of diff ones but master none. Go with C# for desktop/Mobile and JS for the Web and master those. I would say spend 2-3 years using just those languages. - BrU
BrU - Tue, 04 Aug 2020 13:43:02 EST gCG4yvFE No.38890 Reply
Ment to relply to the below post srry took about 50mg Oxy, k-pins a Soma and a little H and about two Xanax bars who knows what i'm coding/posting ATM.

Help me as I ask questions

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- Wed, 23 Aug 2017 18:12:33 EST FzfAQ7sK No.37162
File: 1503526353355.gif -(2193920B / 2.09MB, 125x125) Thumbnail displayed, click image for full size. Help me as I ask questions
>1. Goal = define a function that takes input and then returns it in reverse
>2. result https://pastebin.com/BqUXJMxP
>3. Question = I somehow got it to work, but I dont even know how. I intended for this to just print the last part of an input, but it actually did it and I dont understand how

for i in text:
new_string = i+new_string

someone explain the code logic for why this returns the input in reverse for me, thanks
7 posts and 1 images omitted. Click View Thread to read.
BrU (Fixed F those comments !!WvAZa2Cl - Tue, 04 Aug 2020 13:00:10 EST gCG4yvFE No.38886 Reply

var out="dlrow olleh";

var rev="";

for(var i=out.length-1;i>=0;i--){





BrU (Fixed F those comments !!WvAZa2Cl - Tue, 04 Aug 2020 13:02:58 EST gCG4yvFE No.38887 Reply
1596560578926.png -(153347B / 149.75KB, 1366x768) Thumbnail displayed, click image for full size.
errr here is a screen shot it works grrrr...pretty well lol.

music project

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- Fri, 04 Oct 2019 15:07:24 EST CO8MDNTv No.38109
File: 1570216044114.jpg -(17697B / 17.28KB, 400x400) Thumbnail displayed, click image for full size. music project
hi 420chan. i want to be able to assign sound files (musical notes played on an instrument which i will have recorded) in whatever order i want and at assigned intervals. i want to "compile" and output to the speakers or to a larger sound file. the only experience coding I have is client side (web design) :/ javascript always seemed too hard. any tips where to start? C? could i even do it with javascript do you think? windows and linux both run programs written in C, right?

i just feel like i'll have the MOST authorship power (aka creative control) if I can make the program that orders the music at its most basic level, instead of relying on commercial software that I had no hand in creating and thus may never quite fully understand. call me enthusiastic possibly, but i don't want to spend time trying to understand the DAWs.

feel free to ignore this post if you think I should be searching the search engines and studying on the programming languages on my own to find my answer. honestly, this post is as much a reminder to myself to find the information myself as it is a cry for help.

pic is the ammoon panda
3 posts omitted. Click View Thread to read.
Eliza Finderchog - Wed, 29 Jul 2020 16:14:08 EST /rq5nvb0 No.38858 Reply
Check out chuck

It's suited for most "music and programming" tasks. You can open sound files no problem, there is pitch shift, time stretch and so on. Realtime & sound file output is available as well.
You can even use midi & osc in a pinch (midi kind of sucks cuz you have to use the raw data, but it's there)

If you want something more modern and don't want to learn a new language there is something that works in JS (haven't used it)

mess up thread with html

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- Wed, 06 May 2020 19:44:02 EST h5j/dk9X No.38720
File: 1588808642934.jpg -(158588B / 154.87KB, 1280x720) Thumbnail displayed, click image for full size. mess up thread with html
let's say there's a website that allows you to post html or scripts in the threads.. what is something I could post to potentially ruin the page, like placing words outside the borders or breaking the page

Or like what could i type into a website like this that could wreak havoc like a script that was unstable or maybe cause problems with the page
3 posts omitted. Click View Thread to read.
mayatemple - Sat, 09 May 2020 15:09:58 EST h5j/dk9X No.38732 Reply
What about something like this?

<marquee direction=up scrollamount=532 scrolldelay=584><marquee direction=down scrollamount=435 scrolldelay=754><marquee direction=right>haxxed</marquee></marquee><marquee scrollamount=832 scrolldelay=509>haxxed</marquee><marquee direction=up scrollamount=23>haxxed<marquee><marquee direction=right scrollamount=346><marquee direction=up scrollamount=774>haxxed</marquee></marquee></marquee>

But doing it to the whole page
mayatemple - Thu, 28 May 2020 02:06:53 EST h5j/dk9X No.38754 Reply
<marquee direction=right scrollamount=443><marquee direction=right scrollamount=443><font size=34>test</font></marquee><marquee direction=down><marquee direction=left>test</marquee><marquee direction=right><marquee scroll amount=324 scrolldelay=7><font size=87>TEST</font></marquee><marquee direction=down><marquee direction=right>test</marquee><marquee direction=up>test</marquee></marquee>
Charles Pittville - Wed, 29 Jul 2020 06:45:28 EST d+bxZkSr No.38854 Reply
How in the fuck did you get cloud out of your fucking party holy christ?

A ridiculous sequence of courses

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- Sun, 04 Jun 2017 02:38:16 EST HC1vVHLz No.37033
File: 1496558296564.jpg -(18091B / 17.67KB, 480x360) Thumbnail displayed, click image for full size. A ridiculous sequence of courses
Hello, I made and actually did all this (including the 'grad level' research electives, except for the coding theory book)

It's easier than it looks, it took me 3 years to do that. I did it about 3-4 hrs a day at first but then everything kind of snowballed and I finished it with only 1hr a day after the first year. These days I'm finishing The Art of Computer Programming series, I'm done up to book 4A and doing 4B draft at the same time. I just do it 20-30mins a day.

I cannot shill TAOCP enough, it totally changed me from amateur to professional computer scientist by just doing hundreds and hundreds of exercises. 20mins a day, for one year, it's all you need for the first book. Anyway, pick and choose what you want from this list and enjoy

I make money from cloning shopify apps, and I work P/T on https://turtle.ai/ though much more infrequently these days. I started out shilling myself on elance (now "upwork") as a jr developer and literally taking jobs from 3rd world countries for less than I would spend on lunch. I also work 2 days a week at my local university doing "ML" (statistics) for a cancer research lab making peanuts but it's research, and fun to do, and I don't need the money. The book in that above link, "Parallel and Sequential Algorithms" was directly responsible for the lab hiring me. Anyway anons I'm here to tell you to try this have a good day.
589 posts and 40 images omitted. Click View Thread to read.
Ebenezer Bardbanks - Fri, 18 Sep 2020 16:09:29 EST n4WVe5p4 No.38987 Reply
How do I pitch to these private practices, consultants, lawyers, accountants, etc., whose sites suck (ugly/slow/unresponsive) a proposal to modernise them? I have a feeling this has a high payout potential. I do work professionally as a web dev, although only for 6 months now, so I do have some professional experience, but I have no idea how to approach a potential client. Do I just email them and pretty much say their site sucks, and I can make it much better, or what?

Programming for Retards 101: Explaining to You As If You're a Child

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- Fri, 19 Apr 2019 00:39:57 EST fGSblL+b No.37762
File: 1555648797142.png -(12311B / 12.02KB, 485x303) Thumbnail displayed, click image for full size. Programming for Retards 101: Explaining to You As If You're a Child
I think I might be too retarded to be a programmer. When I am given an assignment for my course work at community college I always have a hard time figuring out what needs to be done. I don't think I am that much of a failure at simple logic, but I'm not a genius so I can't figure out just what it is that I need to do. I am alright with structured programs and sometimes feel as if I excel at that but when it comes to making a bug move position in Java I am lost at the start. I cannot even form an algorithm to save my fucking life. Is there any hope that I would ever grasp everything in programming? I can't even figure out how passing methods/functions in any given language actually works. This is enough to make me contemplate suicide since this means it's one more thing that I would never excel at or one more thing that I would only excel at with the bare minimum. Who else feels this way?
56 posts and 3 images omitted. Click View Thread to read.
Eliza Senningtodge - Thu, 23 Jul 2020 19:50:31 EST sg3M8qaM No.38827 Reply
I feel like I have high functioning enthusiasm or mild Asperger syndrome and when I was younger used to love to learn to script and program stuff now as I get older in my late 20s I feel a lack of sense and wonder and overloaded with so many choices.

I do gravitate towards easier programming languages like Python and C#.

I feel that drive died for me because everything has been done except I do have ideas to make video games but realize I suck at 3D Modeling. and 3D Level design. I know UNITY and C# is a perfect match however when it comes to coding something it's a pain in ass because I have to have my ideas written down and to apply them I need to figure out how to make my own graphics. I suck at graphics design so double whammy. let's assume I can create some 2d graphics and 3d graphics. Let's assume I can design a level. than I have to implement code and figure away to make proper AI.

Knowing myself and how garbage I am at advance mathematics because of my mild learning disabilities due to my ADHD and possible mild aspergers I feel like a complete retard.
Barnaby Nupperfuck - Sat, 25 Jul 2020 13:17:21 EST x6K3CZQk No.38829 Reply
>advanced math
Nah, it's not that advanced to apply the math just looks complicated on first view. Start with a 2D game for a mobile device, then as you gain interest back in writing games you move into 3D
For example this course: http://www.cs.cornell.edu/courses/cs3152/2020sp/lectures/index.php uses Java but I don't see why you couldn't substitute Kotlin for writing Android games or whatever the pref iOS language is, or whatever language you want to use they all have similar libraries or way to interface with the same library used in that course.

Note the lecture 'Graphics: Sprites' with a link to 'affine transformations', the link there is to a guy who watched Wildberger's Linear Algebra lectures and wrote a java program to move a fish around a screen https://code.tutsplus.com/tutorials/understanding-affine-transformations-with-matrix-mathematics--active-10884

We are doing the exact same lectures in the learnaifromscratch.github.io shitty workshop thing, you can skip everything there and just start with linear algebra, because the further the lectures go on Wildberger teaches polynomials, differential calculus (curves) etc. Cornell even has a few slides about projective geometry and perspectives, with additional articles that link to how to write perspectives in 2D to make your graphics look better... and this is also all in Wildberger's lectures too https://medium.com/retronator-magazine/game-developers-guide-to-graphical-projections-with-video-game-examples-part-1-introduction-aa3d051c137d

The Cornell player behavior slides show that it's just rule based AI, using a decision tree, they set this up with FSM diagrams which are similar to the DFA lecture in the AI workshop we did where no math is needed. When character comes across rule, follow this path. This explodes in complexity so they take the FSM diagram and model it as a decision tree using model-view-controller .. all explained in the software workshop in a single lecture. Libraries already exist for this with methods built-in, you aren't constructing them from scratch.

Finally in 15-462 CMU's 3D computer graphics course you'll see things like cubic B-Splines and linear transformations in animations such as this: https://www.youtube.com/watch?v=XVTw68iHef0 and note this is lecture 25 in Wildberger's linalg series, so you would start in the Wildberger world of simple complexity free algebraic math and then progress into the abstract world of kinetics in those graphics classes to write your own 3D characters but you will already know how it all works, so it's just a matter of figuring out the notation to use the existing libraries. Research and development in 3D optimization you may even be interested in, or more advanced character AI, to me this is how I build enthusiasm, understand it at the basic level, progress to find out there are hard unsolved specific problems in that space, wonder how I can solve the problem so then motivated to research this area instead of not having a direction and feeling overloaded with choices.
Barnaby Nupperfuck - Sat, 25 Jul 2020 13:50:11 EST x6K3CZQk No.38830 Reply
*java oops meant actionscript, which is extinct but the concepts are the same.

Another simple example, Brown's 'topics in 2D engines' course shows how to use JavaFX's affine to keep track of transforms for drawing as you move around screens, this is all covered in Wildberger lectures too and easy to do. http://cs.brown.edu/courses/csci1971/lectures.shtml and if you google around Cornell has an 'advanced game design' course which is entirely mobile games, like how to create yet another tree that handles all the events going on, the best places to put event handlers for touch and release player movement, how to avoid problems with the accelerator on most devices, even more affine geometry projections.

Present his work to a client.

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- Wed, 10 Jun 2020 20:47:14 EST AB6euoXN No.38770
File: 1591836434992.png -(139260B / 136.00KB, 500x649) Thumbnail displayed, click image for full size. Present his work to a client.
Hello, I'm new to programming and I have a few questions to ask you to get started in the professional world.
I got in touch with a client who wanted a showcase site for his blog, he sent me his models, how to show him what I did without him being able to retrieve my code.
Do I have to send him screenshots or are there ways to upload it without revealing the code?
I'm careful because he hasn't paid me yet.
Ernest Nuzzleway - Thu, 11 Jun 2020 16:40:16 EST 21Mtqpwz No.38771 Reply
if it's HTML then screenshot it
if it's Javascript you're shit out of luck, best copyright it and release the source code with a non-permissive license
if it's serverside code just give him a link you tard
Riker - Tue, 30 Jun 2020 01:41:52 EST /1arT2QE No.38788 Reply
1593495712951.jpg -(6608B / 6.45KB, 480x360) Thumbnail displayed, click image for full size.
Couldn't you just record what you're doing with VLC then maybe write some pseudo JS to explain what it is you're doing?

C Newbie

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- Sat, 06 Jun 2020 21:13:58 EST NygEZFtl No.38763
File: 1591492438364.png -(76257B / 74.47KB, 1200x1276) Thumbnail displayed, click image for full size. C Newbie
I learned the basics of C and I really want to get my hands dirty. However, I try to look at GitHub repositories and they look nothing like what I learned. Any good way to learn more than basic newbie syntax? Thanks, anon
Fucking Goodville - Sun, 07 Jun 2020 05:58:27 EST gdSxk96e No.38764 Reply
C is just systems language. Download minimal OS for educational purposes https://github.com/mit-pdos/xv6-public try to add new functionalities. You can also call C from other language like python for things that need speed. I am making algotrading bot in python, i model on metatrader and chartsyone, so it should at least have GUI, and maybe own DSL. If you want you can help me with writing GUI or whatever
Jarvis Crangerstone - Sun, 07 Jun 2020 16:59:03 EST MmoLooUZ No.38765 Reply
Why do you need a GUI? Unless you're making a SaaS bot for normies, isn't it easier to keep it in the terminal?
Sophie Drirrylure - Fri, 12 Jun 2020 06:08:26 EST gdSxk96e No.38775 Reply
i want to write metatrader but for cryptocurrencies. For now i think i will go for tkinter+matplotlib, and llvm for writing embedded DSL

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