• 0 Posts
  • 11 Comments
Joined 2 years ago
Cake day: June 24th, 2023
  • jsveiga@vlemmy.nettoAsklemmy@lemmy.ml•How did they get these tires on this concrete post?English
    71·
    2 years ago

    Because the tire is topographically a radially flattened torus, when you turn it half inside out, it becomes a 2D möbius strip. At this point it effectively has only one side. When you push such construct horizontally against a solid, because the z-axis perpendicular to the strip has no negative values (it only has one side), if that coincides with the orientation of the ∇Np of the solid, the z vector wraps around the solid. When the tire snaps to its rest state (inside in), it’s easy to see why it ends up around the pillar.

    This 3D animation demonstrates the concept:

    https://youtu.be/xvFZjo5PgG0

  • jsveiga@vlemmy.nettoProgramming@beehaw.org•Getting fatigued when learning coding
    5·
    2 years ago

    I’m a 55 year old senior developer. I’ve been coding since I was 12 (yeah, RPG II in punch cards and COBOL stored in 8" floppies), and I have a TERIBLE memory.

    Don’t bother memorizing and knowing every language feature and detail. Just get a general awareness of what it can do. Then when you need to accomplish something, it’s good enough that for the first times you do it you go “hey, I recall there’s a way of doing it” or at least (often happens to me) “hmm, this sounds useful enough that this language must have a built-in way of doing it”. Then you google or ask some AI, and you’ll get pointed to the general direction most of the times.

    Then if you use it often enough, you’ll remember it. (and in my case, if I don’t use it for 3 months, I completely forget about it, and even get surprised when I see how I did it in my own old code).

    In the old days, you could indeed know every feature and library (if any existed at all) of a language. Heck, I knew almost all hex op codes for the Z80 assembly by heart (still recall more of those than I recall my relatives names). Nowadays it is impossible to memorize everything.

    In JS realm, if you look at the amount of components you have available in most frameworks, for example in UI5, or existing node modules for your node.js project, even trying to “memorize” them all is a waste of time. In cases like this, you just need to assume there’s a component or module that does what you need, then be good at finding, choosing, and understanding how to use one.

    Not to mention the reduntant stuff they throw in “modern” languages, like javascript’s forEach. Some languages have 10 ways of doing the same thing, each one 0.1% more efficient for each particular case, but may catastrophically fail in some other specific case. Screw it. Learn the one that works well for every case and stick with it - you’re not coding ultra performance critical stuff in js anyway.

    Programming today is usually more an integration of functioning pieces than building from scratch (assuming that if you’re talking about JavaScript, we’re not talking about creating microcode for bare silicon).

    Worry about building an efficient and robust logic in your head. Then the programming language is just a tool, way less important than the logic you came up with.

  • jsveiga@vlemmy.nettoAsklemmy@lemmy.ml•Do you use adblock? Why? Why not?
    1·
    2 years ago

    …or to a diabetic person whose health plan does not cover all the insulin cost they need.

    I should have specified that I was referring to superfluous stuff.

    For basic needs like education and health, any cost is too expensive. That should be sponsored by the whole society and government, and be free.

    In some cases, they are. My bachelor’s degree (5 years Engineering) costed me zero (in monetary units). Even the printed material was free, from the uni printhouse.

    We also have the largest free universal health care system in the world, and it’s even pretty decent in some regions of the country (Brazil).

  • jsveiga@vlemmy.nettoAsklemmy@lemmy.ml•Do you use adblock? Why? Why not?
    41·
    2 years ago

    I’ve never used them.

    If I like an app or site, but the ads are annoying me, I do one of these:

    • If there’s an option to pay the creator/aggregator to eliminate the ads, and the cost/benefit is worth it, I’ll pay.

    • If there is no option to pay, but the app/content is worth the ads annoyance, I’ll keep using the app/site and watch/skip/ignore the ads.

    • If there is no option to pay, or there is, but the price is higher than what I perceive as the app/content value, I’ll stop using the app/site.

    For example, I paid for Baconreader Premium, but I watch YouTube ads, and I removed several sites from my google home page feed because they had more ads than content.

    I’m also stop using Reddit, as I don’t think it’s worth enduring their obnoxious native app.

    And no, I don’t use pirated software, nor watch or listen to pirated movies or music. If something is priced above what I consider it’s worth, I just don’t use it.

    Yes, Baconreader Premium could be consider as a “reddit ad blocker”, but it operated within Reddit’s approval. Now Reddit changed their rules, and it’s their rules.

  • jsveiga@vlemmy.nettoAsklemmy@lemmy.ml•Most important thing you've learned in the past 5 years
    1·
    2 years ago

    It was not the most important thing for me, but I agree: 15-20 years ago, veg options (and sugarless too btw) sucked. You really had to be committed to the cause to endure them.

    We’re not vegetarians, but my daughter has allergy to eggs and milk. We buy cakes, pies, brownies, cookies, etc from a vegan bakery that honestly are delicious - better than most non-vegan equivalents. We all end up eating them, although only she actually “needs” them.

    If vegan activists worked more towards kindly creating and showing the world vegan options that are as good as/better than their animal counterparts, it would help their cause MUCH more than pestering people, destroying property and making everyone hate them.