I'm not sure if anyone else here is into topre switch keyboards, but keycaps for topre are notoriously hard to find. Topre is niche within a niche, so options are limited. But for the last year or so, FKCaps in collaboration with 23_Andreas have been working to launch keycaps in a new profile specifically designed for topre called URSA, compatible with HHKB, Leopold, and Realforce boards. They have now opened for pre-order, scheduled to be delivered in January 2025.

I don't normally go for pre-orders or group buys, but I couldn't say no to this. The URSA profile and the caps themselves look great, and while I do enjoy the OEM keycaps on my HHKB, I also like having other options and trying new things. I've got a black HHKB Pro Hybrid Type-S, and I went with the black caps with legends. The mock-up image looks beautiful. I'm excited.

If you're unfamiliar with the HHKB, or Happy Hacking Keyboard, it's a Unix-style board that has been around for 25 years, designed by a Japanese computer scientist because he wanted a more versatile board for programming and working in the command line on multiple operating systems. What makes the layout special, and why I enjoy it, is because the caps lock key has been replaced by a control key, and delete/backspace has been moved down a row for easier reach and to allow the tilde/backtick key to live on the top right. It's designed so you can easily reach everything from the homerow, and keys like the arrows, home, end, page up, page down are on a secondary layer accessed by the function key. Further, you can change board functionality through DIP switches on the bottom of the board. It's just so fun and pleasant to type on. Build quality is superb and these boards are known to stand the test of time.

So if there are any other topre enthusiasts around here, I urge you to check URSA out. You can read more about the keycaps here.

Your Happy Hacking Keyboard deserves some fresh caps (Verge)

As the title suggests, I am looking for a free chrome or firefox plugin that can locally scrape data from multiple URLs. To be a bit more precise, what I mean by it:

• A free chrome or firefox plugin
• Local scraping: it runs in the browser itself. No cloud computing or "credits" required to run
• Scrape data: Collects predefined data from certain data fields within a website such as https://www.dastelefonbuch.de/Suche/Test
• Infinite scroll: to load data that only loads once the browser scrolls down (kind of like in the page I linked above)

I am not looking into programming my own scraper using python or anything similar. I have found plugins that "kind of" do what I am describing above, and about two weeks ago I found one that pretty much perfectly does what is described ("DataGrab"), but it starts asking to buy credits after running it a few times.

My own list:

• DataGrab: Excellent, apart from asking to buy credits after a while
• SimpleScraper: Excellent, but asks to buy credits pretty much immediately
• Easy Scraper: Works well for single pages, but no possibility to feed in multiple URLs to crawl
• Instant Data Scraper: Works well for single pages and infinite scroll pages, but no possibility to feed in multiple URLs to crawl
• "Data Scraper - Easy Web Scraping" / dataminer.io: Doesn't work well
• Scrapy.org: Too much programming, but looks quite neat and well documented

Any suggestions are highly welcome!

Edit: A locally run executable or cmd-line based program would be fine too, as long as it just needs to be configured (e.g., creating a list of URLs stored in a .txt or .csv file) instead of coded (e.g., coding an infinite scroll function from scratch).

New job. I've been wanting to learn something new for a while, so I took a project where a lot of React is done. I'm learning it from scratch while I work with React.

I have some comments about it.

1. React makes front end work a lot more like programming -- I like that!
2. Javascript has changed a lot, and for the better, since I last used it over a decade ago.
3. The React-Redux tool kit is the bomb. It should be integrated/absorbed into React. I can't see any reason not to use it, even for small applications as it is less wordy wherever you use it.
4. The updating of state values should be more automatic, especially for flag variables not tied to GUI components. It is the major source of hassles with React
5. Udemy React videos. My company makes them available free of charge to employees. I've sampled videos from a number of courses. I'm not a fan of the instructors showing you how to do things in older, less efficient ways first in a learning/demo project, the ERASING that code to do it a better way. The should include copies of the project at each stage if they do that. I finally figured out that the best way to take notes I can use later is to comment out the old code and put the new more efficient next stage stuff on top.
6. React tests really need to improve. They are often more time consuming than the code itself. The tests have forced me to change my code or do needless testing to get the tests to pass. I had one situation where no matter what I did React test said I didn't cover the code until I broke an else clause off into it's one if clause. Blech.

All in all I've been enjoying learning React. It is neat new ( to me ) thing.

I feel sad that I will likely forget it all when I go back to my specialty language.

Hey there,

I wanted to know which sets of passports grant together visa-free access to every country in the world, but I could not easily find that info online. So I figured that I could try to write a small program to determine these sets of passports myself, and then it occurred to me that it would probably be a fun programming challenge to organize, so here we go.

Here's the challenge.

1. Scrape the data you need for instance from The Henley Passport Index.
2. Design a clever algorithm to efficiently find out which are the smallest sets of passports that will grant you visa-free access to every country in the world.
3. Optional. Allow the user to specify which passports they already hold and find out which sets of passports would complement their passports well.
4. Optional. Rank the sets of passports by how easy it is to acquire citizenship in those countries.

The choice of the programming language is yours, bonus points if you write it in assembly 😂

Feel free to collaborate and share your solutions (the algorithms and the actual results) in the comments, and feel free to share your own twists to the challenge that could make it even more fun & interesting.

The person with the most clever, efficient and elegant algorithm wins!

Happy coding folks!

Just for a moment, forget all of the technical pros and cons, the static typing, just-in-time compilation, operator overloading, object orientation to the max...

Is there a programming language that you've just found to be... fun?

Is there one that you'd pick above all else for personal or company projects, if you had your druthers, because you would simply be so excited to use it?

And then, is there something missing in that "fun" language that's preventing it from actually becoming a reality (i.e. small community, lack of libraries, maintenance ended in the 80s, etc.)?

I am an experienced programmer (mostly M$ stack -- C#, etc).

I started learning mobile Android development a few months ago, learning both Kotlin and the larger Android development environment at the same time. I got bogged down in tutorials and guides, because half of them teach Jetpack Compose methodology and half teach XML layout ... and, often enough, don't bother to mention which method they're using.

Which should I learn first? I am initially interested in learning Android dev for my own hobby/fun/side projects, but I would--ultimately--like to be able to put "Android developer" on my resume.

Jetpack definitely looks better, more modern, more OO, and I expect it will eventually become the new standard ... but that could still be many years down the road. Also, while it might be "better"--especially for larger projects--it also smells more complicated.

So, ultimately, I guess I should learn both if I actually intend to become an Android dev ... but I should definitely get comfortable with one, first ... so, which one?

Folks,

Firstly, thank you for guiding me with remarkable insights to my queries about Desktop GUI development using PySide in my earlier post.

After much thinking, pondering and meditation, I've made up my mind with using PySide2 for this side project.

Since my app is cross-platform and geared towards power users (who must be having python installed in all likelihood), I want to know if it's feasible to release it through PyPI (PIP) instead of bundling a setup or MSI? Or is this going to be a bit odd?

Are there any such apps already that do this?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

Granted that it's highly subjective and opinionated, but what this author James Anderson states in this StackOverflow post very much resembles the voices of many like myself who are trying to switch from interpreted/dynamic languages to static and compiled ones like Java/C#. How do Java programmers tackle or respond to this stance?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

I am asking as I have just created one. I won't advertise it here, as it feels not in good faith and I don't think Tildes is the right audience (I imagine most of the techies here are probably fairly seasoned).

I want to offer some kind of programming tuition to people at a good rate (read: affordable to those that might be on a low income but wish to learn). I am doing this to raise money for my local cardiology ward, who have just been told there isn't enough in the budget to cover their Christmas party this year. Morale is low there, and I'd like to help cover the deficit.

How would you structure something like this?

Initially, I have written that I have no set fee and am happy to offer services on case-by-case basis (words to that effect). But in a discussion with a friend, they suggested I should do something like:

• Small donation (£1 - £25): Access to a chatroom (Discord?) where someone can ask questions, and I'll strive to answer and help them as fast as possible)
• Medium donation (£25 - £50): I will arrange a group session where I cover some basic programming concepts and host a Q&A at the end to help bridge any gaps in understanding.
• Large donation (£50+): I will arrange a one-to-one session (via call, video or instant messaging) where I will help go more in-depth on a topic or help debug a specific problem.

If anyone has any experience with this type of thing, I'd appreciate any advice. I have only been a professional software developer for three years, so I am reasonably experienced, but not exactly an industry veteran. I want to set realistic expectations for this service.

I'm happy to share a link to the open collective via private message if anyone wants to have a look over it and offer any advice.

Doesn't it make sense to only provide 32-bit versions to cover maximum user base? Considering that 64-bit operating systems do support 32-bit apps whereas the inverse isn't true.

If you release for x32, you'd have covered the maximum users whereas if you release for x64, you'd have covered only that block. At least open source developers who intend for maximum coverage or user-base for their apps should support at least 32-bit (if not both).

Below is a great answer post in this regard, credits Ken Gregg on Quora:

Yes, there are a lot of 32-bit programs still being developed/sold/distributed. No, not every program is 64-bit.

64-bit operating systems on 64-bit hardware can run 32-bit applications. And there are lots of computers still running 32-bit operating systems (and will for quite some time). So, an application developer can release one 32-bit product and cover the 32-bit and 64-bit customers. Releasing and maintaining two products, one 32-bit and one 64-bit, incurs some costs. And providing only a 64-bit version leaves all the 32-bit customers in the dust. It is logical and cost-effective to supply only a 32-bit version to cover both groups, as long as the application doesn’t require 64-bit features.

Of course, the embedded systems arena still has tons of new development of 32-bit, 16-bit, and even 8-bit software/firmware. The choice of an embedded microcontroller is based on cost, availability, and features required, so software developed in this realm runs the gamut of bitness.

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

Background: Bitwise operators are operators that perform conditional operations at the binary level. These operators are bitwise AND &, bitwise OR |, bitwise XOR ^, and bitwise NOT ~, not to be confused with their logical operator counterparts, i.e. &&, ||, !=, and ! respectively.

Specifically, these operations take the binary values of the left- and right-hand terms and perform the conditional operation on each matching bit position between both values.

For instance, 3 | 4 takes the binary value 010 from 2 and 100 from 4. From left to right, we compare 0 || 1, 1 || 0, and 0 || 0 to get 110 as the resulting binary. This produces the integer value 6.

Goal: Your challenge is to implement one or more of these bitwise operators without using the native operators provided to you by your language of choice. Logical operators are allowed, however. These operators should work on integer values. These operators will likely take on the form of a function or method that accepts two arguments.

Bonus challenges:

• Implement all of the operators.
• Don't use any native binary conversion utilities.
• Whether or not you implement all operators, write your code in such a way that allows for good code reusability.
• For statically typed languages, handle integers of different types (e.g. int vs. uint).

Edit: Minor correction for the sake of accuracy, courtesy of @teaearlgraycold.

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```sql
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When I visit Youtube, their algorithms somehow always manage to come up with the most provocative and mind aggravating political videos and force me to watch them! I go there to do something else and then it takes an entirely different direction.

I've decided to switch to listening to podcasts for a change, do you know any good one, especially in the areas of Web Development, Engineering Stories, Desktop Development, Windows/Linux, etc.?

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

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Here is my schema:

```sql
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, warehouse_id INTEGER
)
;
```

How do I add a `UNIQUE` constraint?

I'm familiar with how the ranking algorithms work on a high level. What I'm curious about is to how those algorithms are actually applied.

How do these platforms actually apply the ranking algorithms so that the user sees the threads appropriately ordered? My knowledge is limited to PHP and MySQL, so I'm looking at it through the lense of those systems. I've thought of a few possible ways, but all of them seem pretty resource intensive.

1. Maintain a table of threads with all relevant information required to calculate ranking, as well as ranking itself. A server side script executing on a routine basis every X minutes (cron job?) updates the rankings on all the threads, so they can be easily ordered. However, people most likely don't care about threads >Y days old, so those can be excluded or automatically deranked somehow.

2. Maintain a table of threads with all relevant information required to calculate ranking. When a user visits, the last X threads (again, users probably don't care about really old stuff) are pulled out of the database and ran through a ranking and sorting algorithm, reordered and displayed to the user. This seems the most resource intensive?

I am by no means a professional developer, but I've been dabbling recently and the concept of how these large quantities of data are ranked both perplexes and interests me.

Been lurking for a week on tildes now and I am really glad this place exists. The crow here is exactly what I have been missing on Reddit for a while now.

Having said that, the whole Reddit situation has some-what motivated me to get the balls rolling on an idea that I have had for a while and I am looking for advice on the same.

I have often heard this phrase "Learn programming by building" but whenever I dive in to the resources, I fall flat due to the information overload and the general abstractness that the field has (I appreciate abstractness but here it demotivates me) and I have never found a proper resource that I could follow to actually build something instead of just blindly following tutorials and playing with them.

So, my question is how do I translate "learn by building a project" into a practical framework.

I know of 100 days of swift and I really like that approach however I don't think I want to start with swift or build an iOS app right now.

Lox is a toy programming language that is designed in Java and C at craftinginterpreters.com.

My challenge to you is: given the constraints of the Lox language, what are some creative or advanced programs you can create?

This page provides a rundown of the design of Lox.

To kick it off, here's a simple function that estimates the value of pi:

fun estimatePi(rounds) {
	var pi = 0;
	var alt = 1;
	for (var i = 0; i < rounds; i = i + 1) {
		pi = pi + alt * 4/(2 * i + 1);
		alt = -alt;
	}
	return pi;
}

print "The value of pi is:";
print getPi(100000);

General Programming Q&A thread! Ask any questions about programming, answer the questions of other users, or post suggestions for future threads.

Don't forget to format your code using the triple backticks or tildes:

Here is my schema:

```sql
CREATE TABLE article_to_warehouse (
  article_id   INTEGER
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)
;
```

How do I add a `UNIQUE` constraint?

We are small company and have utilized COM+ on the server for the last 20 years. Strictly Windows and all LAN based communication. We are rewriting in c#. What are some alternatives that I can look in to that may be better in terms of speed or management for COM+?

Hello,
I'm looking for resources on how to develop AI, aimed at people who already have experience with programming.

They don't have to be free, I would just like to aggregate different type of resources to pick from.

Thanks!

I struggled to word this question.

Let's say that I wish to work on a project to benefit Tildes (I don't currently have an idea, but just for example). Anything I did, I would like to keep opensource and would encourage other users to contribute. But I would like to keep everything linked to my pseudonym as not to dox myself.

However, I would like to have a copy of everything on my personal GitHub as well, because I am a professional programmer and that is effectively my CV.

Is there a good way to mirror a repo in a way that any git history contributed by me, "John Smith", is changed to "bugsmith" on the mirrored repo? (or vice versa).

What was your first programming language, what other languages (if any) do you know now, and what tips do you have for those trying to learn any of those? Whether those tips are for beginners or even advanced, to do with APIs, or if you've got a good library to share.

Lately, I've been working on a game in Godot. I've having a lot of fun, but I keep stressing out about my codebase becoming bad. I'm worrying about amassing technical debt, and having to rewrite huge amounts of code because of bad practices.

I've been reading best practices documentation for Godot, and learning about game programming patterns, but it's still a worry for me.

I'm wondering if this is a normal feeling, and how more experienced developers manage it.

I've been a computer scientist in the field of AI for almost 15 years. Much of my time has been devoted to classical AI; things like planning, reasoning, clustering, induction, logic, etc. This has included (but had rarely been my focus) machine learning tasks (lots of Case-Based Reasoning). For whatever reason though, the deep learning trend never really interested me until recently. It really just felt like they were claiming huge AI advancements when all they really found was an impressive way to store learned data (I know this is an understatement).

Over time my opinion on that has changed slightly, and I have been blown away with the boom that is happening with transformers (GPTs specifically) and large language models. Open source projects are creating models comparable to OpenAIs behemoths with far less training and parameters which is making me take another look into GPTs.

What I find surprising though is that they seem to have only experimented with language. As far as I understand the inputs/outputs, the language is tokenized into bytes before prediction anyway. Why does it seem like (or rather the community act like) the technology can only be used for LLMs?

For example, what about a planning domain? You can specify actions in a domain in such a manner that tokenization would be trivial, and have far fewer tokens then raw text. Similarly you could generate a near infinite amount of training data if you wanted via other planning algorithms or simulations. Is there some obvious flaw I'm not seeing? Other examples might include behavior and/or state prediction.

I'm not saying that out of the box a standard GPT architecture is a guaranteed success for plan learning/planning... But it seems like it should be viable and no one is trying?