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[-] potterman28wxcv@beehaw.org 3 points 9 months ago* (last edited 9 months ago)

I feel like all the points you raise could be replied by : if you do not like it, no one is forcing you into doing it.

It is my understanding that people do this for fun - to take the occasion to get into a new language and/or exercise their problem resolution skills.

Personally, although I love coding (it is a passion), after a whole day of coding I do not feel the energy to partake in a coding event. And during holidays I am busy doing other stuff. So I do not participate in the Advent of Code. But I am still glad that the event exists for people who enjoy it and have the time for it

[-] potterman28wxcv@beehaw.org 1 points 9 months ago

Thanks indeed I misunderstood the problem

[-] potterman28wxcv@beehaw.org 1 points 9 months ago

I misunderstood the problem. I thought the thieve came on bike to steal something. I did not get that the bike itself was what got stolen.

[-] potterman28wxcv@beehaw.org -1 points 9 months ago

I do not get why it would work in that case. I assume the scenario is someone with a bike coming, doing theft, then leaving with the same bike.

Therefore there will be a period without bike, then a period with bike, then a period without bike again.

Let's assume there is no bike on the particular moment viewed. How do you know whether it occured before or after the theft? If you make the wrong decision, you get stuck on an endless binary search.. Unless you take note at each timestamp where you made the decision, draw a tree of timestamps, and go back the tree if your search is fruitless but that's much more complicated than what this post says.

[-] potterman28wxcv@beehaw.org 3 points 9 months ago

On the world’s roads last year, there were over 20 million electric vehicles and 1.3 million commercial EVs such as buses, delivery vans, and trucks.

But these numbers of four or more wheel vehicles are wholly eclipsed by two- and three-wheelers. There were over 280 million electric mopeds, scooters, motorcycles, and three-wheelers on the road last year

There are about 20x more e-bikes than electric cars. Of course its going to demand more oil.

The real question is what is best in terms of oil demand between electric cars and e-bikes

[-] potterman28wxcv@beehaw.org 1 points 9 months ago

Agreed that some people can find it easier with explicit names - however some people find it easier with short meaningless names as it makes them focus on the abstraction rather than the naming. There is no right or wrong here. It all depends on the reader.

[-] potterman28wxcv@beehaw.org 4 points 9 months ago

A specialized architecture will always be better than a general purpose processor no matter how advanced the tech gets.

So you will always need a GPU as a GPU is quite literally a Graphical Programming Unit, that is a specialised architecture for Graphical computations

[-] potterman28wxcv@beehaw.org 10 points 9 months ago

A friend of mine got asked if she had a boyfriend. She asked back "why that question". It was to know whether she would be likely to get pregnant and miss work.

What a horrifying mentality some companies have

[-] potterman28wxcv@beehaw.org 13 points 10 months ago* (last edited 10 months ago)

Hot take: Git is hard for people who do not know how to read a documentation.

The Git book is very easy to read and only takes a couple of hours to read the most significant chapters. That's how I learnt it myself.

Git is meant for developers, i.e. people who are supposed to be good at looking up online how stuff works.

[-] potterman28wxcv@beehaw.org 2 points 10 months ago

There are techniques like abstract interpretation that can deduce lower and upper bounds that a value can take. I know there is an analysis in LLVM called ValueAnalysis that does that too - the compiler can use it to help dead code elimination (deducing that a given branch will never be taken because the value will never satisfy the condition so you can get rid of the branch).

But I think these techniques do not work in all use cases. Although you could theoretically invent some syntax to say "I would like this value to be in that range", the compiler would not be able to tell in all cases whether it's satisfied.

If you are interested in a language that has subrange checks at runtime, Ada language can do that. But it does come at a performance cost - if your program is compute bound it can be a problem

[-] potterman28wxcv@beehaw.org 4 points 10 months ago* (last edited 10 months ago)

Why would you have to choose between tests and compiler checks? You can have both. The more you have the less chance of finding bugs.

I would also add that tests cannot possibly be exhaustive. I am thinking in particular of concurrency problems - even with fuzzing you can still come across special cases where it goes wrong because you forgot a mutex somewhere. Extra static checks are complementary to tests.

I think you can write "unsafe" code in Rust that bypass most of the extra checks so you do have the flexibility if you really need it.

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submitted 10 months ago* (last edited 10 months ago) by potterman28wxcv@beehaw.org to c/programming@beehaw.org

Cross-posting this here as I saw some misconceptions about Rust language

I think that blog describes well the pros of using a strongly-typed language like Rust is. You may fight the compiler and get slower build times but you get less bugs because of the restrictions the language imposes you.

The biggest con of Rust is that it requires learning to be used, even for someone who has already programmed before. It's not like Python or Ruby where you can just dive in a code base and learn on the go. You really need to read the Rust book (or skim through it) to get through the notions. So it has a higher entry level, with all the misunderstandings that come with it.

[-] potterman28wxcv@beehaw.org 7 points 10 months ago* (last edited 10 months ago)

When I first got daily access to internet (back in 2009), I got curious about how programs are built. Like, if I wanted to make my own application, what should I do?

I googled something along that direction and it linked me to a famous french website for learning programming (site du zéro) where I learnt C language.

After the course I made a 2D Snake game with SDL2. How naive was I to think I could write it in one go without testing anything in between! I scrapped the 1st attempt because it was a disaster and randomly inserting/removing * was not helping.

I started again from scratch, testing in smaller steps, and I really liked it. After a couple of weeks I had my Snake game working! I was so proud of it that I showed it to my mom. I do not have the source files anymore but I still have the binary somewhere

Afterwards I sticked with it and continued programming - I was back in school without much access to internet so I programmed on my TI-83+ instead. Eventually I pursued computer science studies then a PhD.. It got me hooked real good.

53

Hello there,

I am an experienced programmer. I can do C/C++/Rust/assembly/Ruby/Perl/Python/ etc.. The language itself is not a barrier.

The barrier to me is that I have never coded a single web or android application. I guess it must be surprising but I am more of a low-level programmer in my job (I develop a compiler backend) and I never really had the opportunity or idea to work on an app.

What would be a good starting point for making an android application?

A quick search got me this: https://google-developer-training.github.io/android-developer-fundamentals-course-concepts-v2/unit-1-get-started/lesson-1-build-your-first-app/1-1-c-your-first-android-app/1-1-c-your-first-android-app.html

Would it be a good starting point?

Side note: my app will not have to interact with any service. If I were to code it as a command-line program, it would not take me more than a day or two. The actual app would involve (for now) no more than a text field, a button, some logic attached to it - the hard part for me being to choose a framework to build it, "upload it" to my phone and use it.

37

I used to be a lurker of r/C_programming where people would ask questions and get answers. It mostly consisted of students wanting to get a human answer to their problem.

I liked chiming in there and answering from time to time. Although you always had that one student who ordered to do the homework for them, there were some nice and helpful interactions in that subreddit.

Would people be interested in a community focused around helping each others in programming? Or would this very community do the job already?

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potterman28wxcv

joined 1 year ago