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So I barely get home and I see my 10 year old sister in the living room coding with the Xcode Playground, I asked her where she learned how to do that and she said "I just read the books you had." I'm so proud. 😭🤘🏼10
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When you think, you are on playground VM and you try : sudo rm -rf /etc , realizing it was your Workstation... my collegue did it last week.
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For a project day we had to write a game of our choice in Java.
"You should make this game using the JSwing library and make each component a JComponent"
Later I learned you can simply use a Bitmap as a canvas.
NEVER. EVER. BASE. YOUR. GAME. ON. SWING.
It inefficient to the top of my taskmanager. I had to wrap everything with something like a virtual playground where I had to manage everything myself to not roast my cpu.
I had alot more fun debugging hundred lines of C code with print statements than writing that shit2 -
Why do devs hate windows (and all its products) so much? I mean yaa okay it is a shit os for you to get your development thingies done. Yaa I know its not open source. Yaa I know its not free. Yaa I know a lot of malwares are targetted towards windows. Yaa I know it takes decades to install updates which are released almost every week. And so on....
But wasnt windows the first operating system you laid your hands on? I mean me being a 90s born kid from India, Windows 98 was my first operating system and I was really in love with it as a teenager. MS paint was my playground and I used to go berserk over there. I mean come on. Being a teenager and knowing nothing about how a computer actually works, would you have been able to figure out how to run an NFS on linux? All the kickass presentations made in power point were so in during that time. The first code I ever wrote was in turbo C running on Windows XP. So whoever is bashing Windows and any of their products is a shit person because though Windows is not meant for developers (that too only some) it is a great operating system and I will always root for it in any forum/post where it is being bashed or criticized about. Not a Windows fan-boy (I dont known if there is even such a thing) but Windows is best for non-devs.21 -
What am I doing right now? Scamming scammers.
I'm attempting to build a delicious Windows honey pot for scammers to play in only to be terribly disappointed by how buggy it is.
That's right mother fucker I've rigged this computer to not work on purpose!
Have fun trying to run your shitty programs and steal data that isn't there.
Oh by the way if you want to play in this playground it's www.scammer.info3 -
Am I the only one who's slightly annoyed that the first lesson in the Swift Playground app is not a "Hello World" program?4
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Hello DevRant community! It’s been a while, almost 5 years to be exact. The last time I posted here, I was a newbie, grappling with the challenges of a new job in a completely new country. Oh, how time flies!
Fast forward to today, and it’s been quite the journey. The codebase that once seemed like an indecipherable maze is now my playground. The bugs that used to keep me up at night are now my morning coffee puzzles. And the team, oh the team! We’ve moved from awkward nods to inside jokes and shared victories.
But let’s talk about the real hero here - the coffee machine. The unsung hero that has fueled late-night coding sessions and early morning stand-ups. It’s seen more heated debates than the PR comments section. If only it could talk, it would probably write its own rant about the indecisiveness of developers choosing between cappuccino and latte.
And then there are the unforgettable ‘learning opportunities’ - moments like accidentally shutting down the production server or dropping the customer database. Yes, they were panic-inducing crises of apocalyptic proportions at that time, but in hindsight, they were valuable lessons. Lessons about the importance of thorough testing, proper version control, reliable backup systems, and most importantly, owning up to our mistakes.
So here’s to the victories and failures, the bugs and fixes, the refactorings and 'wontfix’s. Here’s to the incredible journey of growth and learning. And most importantly, here’s to this amazing community that’s always been there with advice, sympathy, humor, and support.
Can’t wait to see what the next 5 years bring! 🥂3 -
DevRant-API-Docs Site Update:
The overall is now done!
I still have to do the actual docs content but the playground, the Q&A and the links page are pretty done now and only require some little changes.
Here's the link:
https://devrant-docs.github.io/
Have fun!8 -
This rant is your playground for devrant-related chatgpt bot queries. You will still be judged for posting your queries here, but slightly less than in other rants.238
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React's `useEffect()` won't fire if you have someone in your team wrote a hook that maintain a state of an array, mutates the array, empties it, and then set it back to the state.
https://codesandbox.io/s/...
Reported it, ticket closed without asking, told should avoid mutating the object stored in useState.
Isn't it bluntly obvious that if someone spent hours to spot the line in hundreds of lines of code, which actually caused the problem and reduce the whole piece of turds into some understandable minimal reproducible example means they must of course for sure know that by avoiding mutating the array it will fix the bloody issue?
Isn't that bluntly obvious they are trying to say that there is a bigger issue behind those twisted wires?9 -
Xcode is pissing me off:
- Suddenly it starts force quitting every 2 minutes
- Every second time it doesn't know everything and only can autocomplete words that were already in the document
- Playground pages: Good idea, works horribly.
- when I use modules from CocoaPods the first time, I need to restart Xcode and the computer 5 times till I don't run into build errors
- it likes to just throw random errors everywhere and leaving you unable to build anything
- it only copies new files every second or third time into the project folder.
I'm really pissed. I just wanted to code... -
I recently went through a very detailed and well-explained Python-based project/lesson by Karpathy which is called micrograd. This is a tiny scalar-valued autograd engine and a neural net on top of it.
The project above is, as expected, built on Python. For learning purposes, I wanted to see how such a network may be implemented in TypeScript and came up with a 🤖 micrograd-ts - https://github.com/trekhleb/... repository (and also with a demo - https://trekhleb.dev/micrograd-ts/ of how the network may be trained).
Trying to build anything on your own very often gives you a much better understanding of a topic. So, this was a good exercise, especially taking into account that the whole code is just ~200 lines of TS code with no external dependencies.
The micrograd-ts repository might be useful for those who want to get a basic understanding of how neural networks work, using a TypeScript environment for experimentation.
With that being said, let me give you some more information about the project.
## Project structure
- [micrograd/](https://github.com/trekhleb/...) — this folder is the core/purpose of the repo
- [engine.ts](https://github.com/trekhleb/...) — the scalar `Value` class that supports basic math operations like `add`, `sub`, `div`, `mul`, `pow`, `exp`, `tanh` and has a `backward()` method that calculates a derivative of the expression, which is required for back-propagation flow.
- [nn.ts](https://github.com/trekhleb/...) — the `Neuron`, `Layer`, and `MLP` (multi-layer perceptron) classes that implement a neural network on top of the differentiable scalar `Values`.
- [demo/](https://github.com/trekhleb/...) - demo React application to experiment with the micrograd code
- [src/demos/](https://github.com/trekhleb/...) - several playgrounds where you can experiment with the `Neuron`, `Layer`, and `MLP` classes.
Demo (online)
---------------------
To see the online demo/playground, check the following link:
🔗 https://trekhleb.dev/micrograd-ts
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I have a ton.
This one is more about my own foolhardiness, but I also learned a ton and came out stronger & wiser.
when I started out as a dev (my very first job!) and had not learned to say no.
I was a novice way out of my playground.
Like lifting a full booking platform from legacy php to Laravel & launching it like yesterday because it’s high season.
Didn’t know the full domain, so I just built something quite different in a week and shafted the existing db into it.
Obviously wasn’t feature complete or anything, so it resulted in maintaining legacy while building the new one and because it was already live and on different domains, we didn’t fully know which ppl went to, I had to every day painstakingly back port data from both platforms.
What I initially thought would take a few weeks that was launched in 3 days, spanned across 2 years plus one year refining and cleaning up my mess.1 -
Random thoughts on more out of the box tools/environments.
Subject: Pharo
Some time ago I had shown one of my coworkers about Pharo and he quickly got the main idea behind it but mentioned how he didn't like the idea of leaving behind his text editor to deal with source code.
Some time last week I showed the dude some cool 3d animations you can do with Pharo while simultaneously manipulating the code to change them in real time. Now that caught his attention particularly and he decided he wanted to know more about the language but in particular the benefits of fucking around with an image based environment rather than a file based.
Both of us reached the conclusion that image based makes file based dev enviroments seem quaint in comparison, but estimated that it was nothing more than a sentiment rather than a fact.
We then considered what could be the advantage/disadvantages of such environments but I couldn't come up with anything other than the system not having something like Vim or VS Code or whatever which people love, but that it makes up for it with some of the craziest IDE tools I had ever seen. Plugins in this case act like source code repos that you can download and activate into your workflow in what feels something similar to VS Code being extended via plugins written in JS, and since the GUI is maleable as it is(because everything is basically just subsets of morp h windows) then extending functionality becomes so intuitive that its funny
Whereas with Emacs(for example) you have to really grind your gears with Elisp or Vimscript in Vim etc etc, with Pharo your plugin system is basicall you just adding classes that will convert your OS looking IDE into something else.
Because of how light the vm machine is, portability is a non issue, and passing pharo programs arround is not like installing Java in which you need the JVM.
Source code versioning, very important, already integrated into every live environment and can be extended to do pushes through simple key bindings with no hassle.
I dunno, I just feel that the tool is too good to be true. I keep trying to push limits into it but thus far I have found: data visualization and image modeling to work fine, web development with Teapot to be a cakewalk and work fine, therr are even packages for Arduino development.
I think its biggest con would be the image based system, but would really need to look into how this is bad by any reason other than "aww man I want vim!" since apparently some psychos already made Emacs and VS code packages for interfacing with Pharo source trees.
Embedded is certainly out of the question for any real project since its garbage collected and not the most performant cookie in the jar.
For Data science I can see some future, seems just as intuitive and interesting as a Jupyter Notebook actually, but the process can't and will not be the same since I still don't know of a way to save playground snippets unless you literally create classes for it, in which case every model you build gets saved inside of an object, sounds possible but, strange since it is not a the most common workflow in jupyter.
Some of the environment is sometimes glitchy, but it does have continuos development and have not found many hassles.
There is a biased factor from my side: I seem to be wired to understand the syntax and simple object model better than in other languages. To me this feels natural as if I was just writing ideas rather than code, mostly because I feel that there really ain't much in terms of syntax, the language gets out of my way and the IDE feels like the most intuitive environment in the world to me. I can see why some people would find it REALLY weird of counterintuitive tho.
Guess I really am a simple dude. -
Nothing better than Rust and LALRPOP. I've been trying to play with Bison and C++ for the whole quarantine and nothing would compile. I just sat for two days with Rust and LALRPOP and I was able to make a small interpreter that can make new variables, calculate simple expressions and print stuff. Like this:
var = 5 + 3;
print var;
var = 2 * var + 4;
var2 = 3 * var + 3 * (var + 4);
print var2 * var;
And all this in just two days. I have no Rust experience except for toying with it on an online playground. I have no LALRPOP nor parsing experience. Two days.
Now, it's not like I wouldn't be able to do this in C++ too if somebody told me how to. But nobody has. And the documentation online is gruesome. None of the bison example I found online could compile. This is why documentation matters people! Honestly, if there's one reason I think old projects die, it's because they ether don't update themselves OR they don't update their documentations. Look at the US government now, looking for COBOL programmers.4 -
I keep having this recurring idea that I can fill in the gaps in my education by writing video games that allow me to explore those topics. This would force me to learn the subject well enough to share it with other people. So it would not be just surface level.
I keep thinking of a program that explores and visualizes math topics and programming topics. I would really like to have a program that allows me to visualize memory cells for algorithm exploration. Or a really nice graphing calculator in the computer that allows me to view multiple graphs to compare and contrast equations.
What holds me back is both math and CS are huge topics. I feel like any kind of playground would only cover a small subset. Ideally whatever I make should be extendable over time to add content and topics. It would need to be somewhat fun as well.
I can imagine an AI training program where you help your character navigate a room of hazards or die. This could be one such fun challenge.1 -
Is there any tool that generates an eslint config interactively? E.g. I would start off with airbnb style (but not required) and then toggle different options and see what changes and what will be highlighted. In the end I can save the config. I know eclipse provides such a wizard for java, but haven't found an equivalent one for JS/TS. Anything better than ESLint playground?1
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