I don’t think your solution is O(N^3). Can you explain your reasoning?

C#

using MathNet.Numerics.LinearAlgebra;
public class Day02 : Solver
{
  private ImmutableList<Vector<Double>> data;

  public void Presolve(string input)
  {
    data = input.Trim().Split("\n")
        .Select(
            line => Vector<Double>.Build.DenseOfEnumerable(line.Split(' ').Select(double.Parse))
        ).ToImmutableList();
  }

  private bool IsReportSafe(Vector<Double> report) {
    Vector<Double> delta = report.SubVector(1, report.Count - 1)
        .Subtract(report.SubVector(0, report.Count - 1));
    return (delta.ForAll(x => x > 0) || delta.ForAll(x => x < 0))
        && Vector<Double>.Abs(delta).Max() <= 3;
  }

  private bool IsDampenedReportSafe(Vector<Double> report) {
    for (Double i = 0; i < report.Count; ++i) {
      var dampened = Vector<Double>.Build.DenseOfEnumerable(
            report.EnumerateIndexed()
                .Where(item => item.Item1 != i)
                .Select(item => item.Item2));
      if (IsReportSafe(dampened)) return true;
    }
    return false;
  }

  public string SolveFirst() => data.Where(IsReportSafe).Count().ToString();

  public string SolveSecond() => data.Where(IsDampenedReportSafe).Count().ToString();
}

C#

public class Day01 : Solver
{
  private ImmutableArray<int> left;
  private ImmutableArray<int> right;

  public void Presolve(string input)
  {
    var pairs = input.Trim().Split("\n").Select(line => Regex.Split(line, @"\s+"));
    left = pairs.Select(item => int.Parse(item[0])).ToImmutableArray();
    right = pairs.Select(item => int.Parse(item[1])).ToImmutableArray();
  }

  public string SolveFirst() => left.Sort().Zip(right.Sort()).Select((pair) => int.Abs(pair.First - pair.Second)).Sum().ToString();

  public string SolveSecond() => left.Select((number) => number * right.Where(v => v == number).Count()).Sum().ToString();
}

I don’t think it’s overhyped, at least I’ve never heard anyone hyping it up so much. I would be happy to recommend you other books if you want :)

I also don’t think it’s a big deal if you didn’t like the book. I don’t think even Knuth himself would be upset, really.

Sounds like atop is exactly what you need.

False. Everyone can opt out of Facebook.

i’m pretty sure my neighbour’s dog is going to announce a new ai assistant any day now

Also, if you remember enjoying hacking, maybe pick that up again? There’s a massive shortage of security engineers at all times.

First of all, you can totally do it! The field is massive, but also full of very bad programmers, and seeing how you were able to write a coherent text of three paragraphs, that already puts you ahead of the curve. Determination and perseverance is key.

I would suggest to play to your strengths. Java is still Java. Most of the progress since the 1990s was in the libraries and tooling, which only recently have become passable. The language itself also evolved somewhat, but there’s nothing that you won’t pick up in a couple of days of working with it.

Start with [1], work through all the boxes that are unfamiliar to you, practice a little on a pet project, or an open source project, and you’ll land a job in no time.

[1] https://roadmap.sh/java

You likely have a mental model of Subversion, so what I would suggest is to try to forget as much of it as possible first, as Git is very different.

Take a tutorial that is aimed at Git beginners, e.g. [1]. This will help you start building a new mental model as well as get first practical experience.

After that, read the official docs starting wtih the object model[2]. The reason why many people struggle to get into git, especially after using other VCS, is that it was built from the ground up, without much regard of the established conventions and terminology. Linus Torvalds once mentioned that he used his experience designing file systems when developing git.

So the object model of git is very simple, but also not intuitive. However, once you understand it, everything will start making sense, including the xkcd you’ve linked.

[1] https://gitimmersion.com/ [2] https://git-scm.com/book/en/v2/Git-Internals-Git-Objects

I didn’t use yaml much while it was gaining popularity, and therefore didn’t pay much attention. But this article really made me pay attention and now I distrust anything that uses yaml in any capacity.

https://ruudvanasseldonk.com/2023/01/11/the-yaml-document-from-hell

I have to download an app to confirm the reservation?

<three sentences not containing the answer to the question>

yes, calling it a heist specifically is extremely colourful in the wrong way

wait, you’re actually using encrypted email? Is it for work or you use it with friends/family too?

I’ve never received an encrypted email in my entire life.

One of the best TV sci fi franchises ever.

182 is the objectively correct answer.

30 years on the internet, never seen so many people being wrong.

I can’t imagine how normal people use any software at all. When something doesn’t work for me, often I can figure out what could’ve gone wrong. For instance, there might be bug in the JavaScript form handler, and I can just bypass it. Or an app doesn’t invalidate its cache properly, so I just need to flush it manually.

One problem with that is that you will end up with two EFI partitions. This is not supported very well by anything, really, so you will run the risk of Windows messing with the wrong partition anyway.

I’ve updated my comment.