GTA online took ages to load, like 10+ minutes on some machines. One guy got really annoyed and investigated. It turned out to be loading a single 10MB JSON file in an incredibly inefficient manner. The JSON file contains about 60,000 items and they need to extract each item from it, but every time they look for the next item they start from the beginning of the file again, despite already knowing where they found the previous item! All the entries in the JSON list are unique, but the code also checks for any duplicate entries, of course it’s also done in the least efficient way possible requiring 1,984,531,500 comparisons for something that has no effect. Not only did this one person find these problems but he also implemented a fix that reduced load times by 70% as a result, shaving off more than 7 minutes of load times for some machines. The fact that Rockstar didn’t notice this is frankly shocking and speaks to the fact that they really just don’t care.

https://nee.lv/2021/02/28/How-I-cut-GTA-Online-loading-times-by-70/

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That’s fair. Because I explicitly mentioned &'static str later on, my explanation of &str implicitly assumes that it’s a non-static lifetime str, so it isn’t stored in the executable, which would only leave the stack. I didn’t want to get into lifetimes in what’s supposed to be a high-level description of types for non-Rust programmers, though. I mentioned ‘stack’ and ‘heap’ explicitly here because people understand that they mean ‘fast’ and ‘slow’, respectively. Otherwise the first question out of people’s mouths is ‘why have a non-growable string type at all??’.

I never said str is heap-allocated. I’m presuming you meant stack when you said heap (or you meant String when you said str)?

I haven’t used Ada myself, but I have heard it brought up before. One of the huge advantages Rust has is it’s packaging, versioning and build system. I’d argue this is second to none.

Rust is GPL licensed. As I understand it, licensing was a major blocker for Ada and potentially hampered it’s uptake in the past.

Rust has modern sensibilities, like first-class iterator support, or built-in UTF-8 strings, etc… It also has a lot more of a functional style, rather than procedural.

More subjectively, Ada’s syntax looks very… unflattering to my eyes. I much prefer Rust in that regard. Looking at Ada reminds me of my time with VHDL, which is never a flattering comparison.

Ada actually found itself implementing Rust’s ownership and borrowing system, as pointers were not formally verifiable using SPARK before, so Rust must be doing something right!

Zig also seems interesting. I’m definitely a fan of what I’ve seen of their error handling. Intercompatibility with C (no FFI required) also sounds tempting, especially if I already had a legacy C codebase I wanted to migrate.

Firstly, I’m not sure where you got the impression that Rust is designed to replace C. It’s definitely targetted at the C++ crowd.

The string comparison with Rust actually points out one of my problems with C: All those Rust types exist for a reason - they should behave differently. That means that in C these differences are hidden, implicit and up to the programmer to remember. Guess who is responsible for every bug ever? The programmer. Let’s go through the list:

&str - a reference to a UTF-8 string on the stack, hence fixed size.

String - a handle to a UTF-8 string on the heap. As a result, it’s growable.

&[u8] - a reference to a dynamically sized slice of u8s. They’re not even ASCII characters, just u8s.

&[u8;N] - a reference to an array of u8s. Unlike above they have a fixed size.

Vec - a handle to a heap-allocated array of u8s.

&u8 - a reference to a u8. This isn’t a string type at all.

OsStr - a compatibility layer for stack-allocated operating system strings. No-one can agree on what these should look like - Windows is special, as usual.

OsString - a compatibility layer for heap-allocated OS strings. Same as above.

Path - a compatibility layer for file paths, on the stack. Again, Windows being the special child demands special treatment.

PathBuf - a heap-allocated version of Path.

CStr - null-terminated stack-allocated string.

CString - null-terminated heap-allocated string.

&'static str - a string stored in the data segment of the executable.

If you really think all of these things ahould be treated the same then I don’t know what to tell you. Half of these are compatibility layers that C doesn’t even distinguish between, others are for UTF-8 which C also doesn’t support, and the others also exist in C, but C’s weaker type system can’t distinguish between them, leaving it up to the programmer to remember. You know what I would do as a C dev if I had to deal with all these different use cases? I would make a bunch of typedefs, so the compiler could help me with types. Oh, wait…

I dislike C because it plays loosey-goosey with a lot of rules, and not in an opt-in ‘void*’ kind of way. You have to keep in your head that C is barely more than a user-friendly abstraction over assembly in a lot of cases. 90% of the bugs I see on a day to day basis are integer type mismatches that result in implicit casts that silently screw up logic. I see for loops that don’t loop over all the elements they should. I see sentinel values going unchecked. I see absolutely horrible preprocessor macros that have no type safety, often resulting in unexpected behaviour that can take hours or days to track down.

These are all problems that have been solved in other, newer languages. I have nothing personal against C, but we’ve had 40+ years to come up with great features that not only make the programmer’s life easier, but make for more robust programs too. And at this point the list is getting uncomfortably long: We have errors as types, iterators, type-safe macro systems, compile-time code, etc… C is falling behind, not just in safety, but in terms of ease of use as well.

I was surviving with Ubuntu, I had my complaints but I figured ‘that’s just how it is’ on Linux, that it was the same everywhere. I didn’t even realise what I was missing until I switched.

I got a hardware upgrade at one point, so in order to get those new drivers ASAP I tried an Arch-based distro, with plans to switch back once drivers became available. I never moved back.

The two big reasons I stayed was ironically enough the lack of good Ubuntu documentation, and the PPA system. Ubuntu is used a lot, but there’s not really formal documentation anywhere, only random tutorials online (most likely out of date and never updated) and people on forums talking about their problems. By contrast the Arch wiki is the gold standard of Linux documentation, there’s just no comparison. Even on Ubuntu I found myself using it as a reference from time to time.

Regarding PPAs, the official Ubuntu package list is strangely small so if you’re like me and find yourself needing other software, even mainstream software like Docker, you’ll be faffing about with PPAs. So if you want to install Docker, instead of typing sudo apt install docker You instead have to type:

# Add Docker's official GPG key: 
sudo apt-get update 
sudo apt-get install ca-certificates curl gnupg 
sudo install -m 0755 -d /etc/apt/keyrings 
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg 
sudo chmod a+r /etc/apt/keyrings/docker.gpg 
# Add the repository to Apt sources: 
echo \ "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \ $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \ sudo tee /etc/apt/sources.list.d/docker.list > /dev/null sudo apt-get update

These are the official install instructions, by the way. This is intended behaviour. The end user shouldn’t have to deal with all this. This feels right out of the 90’s to me.

Instead of PPAs, Arch has the Arch User Repository (AUR). Holy moly is the AUR way nicer to work with. Granted, we’re not quite comparing apples to apples here since the AUR (typically) builds packages from source, but bear with me. You install an AUR package manager like yay (which comes preinstalled on my flavour of Arch, EndeavourOS). yay can manage both your system and AUR packages. Installing a package (either official or AUR) looks like yay packageNameHere. That’s it. A full system upgrade like sudo apt update; sudo apt upgrade is a single command: yay -Syu, a bit cryptic but much shorter. The AUR is fantastic not just for the ease of use, but for sheer breadth of packages. If you find some random project on github there’s probably an AUR package for it too. Because it builds from source an AUR package is essentially just a fancy build script based on the project’s own build instructions, so they’re super easy to make, which means there’s a lot of them.

You might argue ‘but building from source might fail! Packages are more reliable!’, which is somewhat true. Sometimes AUR builds can fail (very rarely in my experience), but so can PPAs. Because PPAs are often made to share one random package they can become out of date easily if their maintainer forgets or simply stops updating it. By contrast AUR packages can be marked out of date by users to notify the maintainer, and/or the maintainer role can be moved to someone else if they go silent. If a PPA goes silent there’s nothing you can do. Also, since an AUR package is just a fancy build script you can edit the build script yourself and get it working until the package gets an update, too. PPAs by comparison are just a black box - it’s broken until it gets updated.

Moral of the story? Don’t be afraid to just give something a go. Mint will always be waiting for you if you don’t like it.

People have made distro recomendations already, so I want to talk a bit about what makes a distro a distro: application repositories and management, update cadence, and what’s installed by default. That’s pretty much it. Anything else can likely be transplanted from distro to distro.

Out of the default applications by far the most important is the desktop environment. Have a look at Gnome, KDE (and others, cinnamon, etc.). Pick something you like the look of. Gnome is known to be closer to Mac styling and sentiments, including the our-way-or-the-highway philosophy, limited customisability in the name of consistency, etc… KDE is the ‘we heard you like customisation so we put customisations on your customisations’ kind of environment.

Update cadence really boils down to one of two things - do you want a new OS version every few months where the distro maintainers manually release a bunch of software all tested together (e.g. Debian, Ubuntu, Fedora), or do you want each application released individually after it’s been tested to work with everything else (Arch)? Note that the former are sometimes called ‘stable’ releases but not because they are less likely to crash, but because there are simply fewer updates. The latter are called ‘rolling’ releases.

The application management philosophies are a lot harder to nail down, especially as a newbie. You will probably just have to accept that the first distro you try will likely not be the one you settle on. For instance I started with Ubuntu until I got fed up how difficult it was to install anything not found in the main repository (a surprising amount of software): In Debian-based distros (like Ubuntu) unofficial software is fragmented across thousands of ‘personal’ repositories that you must manually add URLs and signing keys for, it feels very clunky. Because they are personal respositories it’s easy for the owner to abandon it or just not push updates and you won’t even notice until it breaks after a system update. Once I had some Linux experience under my belt I found the Arch repository style much easier to work with: One central official repository, and one ‘unofficial’ repository. I’ve heard Fedora has a similar system.

But the single most important piece of advice - just pick something. The great thing about Linux is it makes hopping distros easy: A package manager makes it trivial to export a list of installed programs so you can reinstall them on your next distro. You won’t be enslaved to a distro once you decide, so just pick something and use it for a bit. Learn what you like and what you don’t. Use that to decide on your next pick.

This is basically rule number one in the autocrat’s handbook: Rule something as illegal but make it necessary (e.g. give your public servants a near-zero salary, making them dependent on taking bribes to live). Then at any point the leaders have the legal grounds to arrest whoever they want for ‘corruption’. It’s a very common tactic.

Selective enforcement is one of those concepts that isn’t talked about much outside of legal ethics circles unfortunately, but I think it’s an important concept to be aware of and the potential issues with it. I first heard about it from The Dictators Handbook, which explores many behaviours of politicians and those in power, including how and why corrupt nations often employ selective enforcement. It’s an interesting read, would recommend. It definitely changed how I looked at the world.

I have no strong feelings on which particular weapons should be legal to carry, even if it’s just pepper spray or brass knuckles or something. The main thing is that it should be legal to carry something.

Also, selectively enforced laws are a terrible, HORRIBLE concept and should be avoided at all costs. It gives police and those in power the ability to selectively punish (or pardon) whomever they choose, often at the whims of their personal biases. Passing and exploiting selectively enforced laws is a common tactic used by corrupt nations and can be used to silence political opponents, target selected groups, promote agendas and so forth. The law should not rely on cops ‘being nice’ and choosing not to arrest you.

For a start it shouldn’t be a crime to merely carry something for self-defense. The current laws say that carrying anything for the express purpose of self-defense is illegal. There’s a bizarre cat and mouse game where the law says ‘its fine to defend yourself’ while simultaneously expressly forbidding you from carrying anything that you might be able to use for self-defense. It puts anyone actually in a life threatening situation at a supreme disadvantage: An attacker is already breaking the law so they’ll be armed to some extent, but under the law the victim is designed to be defenseless. If they do decide to arm themselves against the law and use it to defend themselves they can be prosecuted for carrying a weapon after the fact.

I never said anything about changing gun laws.

New Zealand. Gun laws are pretty strict, though we have lots of farmers who have guns for defending livestock. You can own guns with a valid reason (e.g. recreational shooting, not self defense) but essentially the only two places they can be is in a locked safe or (being transported to) a gun range.

In addition any and all tools and weapons are illegal to carry for the purpose of self defense (knives, pepper spray, tazers, clubs, screwdrivers, etc.). There’s a crime epidemic here at the moment, corner stores being robbed by people with machetes, jewelry stores ram raided with trucks, but if you dare even carry pepper spray to defend yourself you can be jailed. Don’t bother calling the cops either, they won’t be there until at least half an hour later. Cops don’t care about robberies. We literally once had the dispatcher tell us that no police would be coming. It’s ridiculous.

I wish self defense laws were less crazy here, if someone enters your home or property armed with a weapon you should be able to respond appropriately without fear of going to jail yourself.

Both Boost and Connect have functioning instance blocklists.