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Cake day: August 7th, 2023

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  • What’s fun is determining which function in that list of functions actually is the one where the bug happens and where. I don’t know about other langauges, but it’s quite inconvenient to debug one-linres since they are tougher to step through. Not hard, but certainly more bothersome.

    I’m also not a huge fan of un-named functions so their functionality/conditions aren’t clear from the naming, it’s largely okay here since the conditional list is fairly simple and it uses only AND comparisons. They quickly become mentally troublesome when you have OR mixed in along with the changing booleans depending on which condition in the list you are looking at.

    At the end of the day though, unit tests should make sure the right driver is returned for the right conditions. That way, you know it works, and the solution is resistant to refactor mishaps.


  • Norway has something similar, you own the inside usually and the HOA own the outside, including the houses themselves. Live in one, largely a good thing but some things come slow since they need to be voted for of course. Generally worth it, since you get good deals on things like internet. It’s cheaper but it’s also something you usually have to use and the only option. Eg only that provider of internet.

    I’m my case, they are also responsible for my balanced ventilation, my exterior doors and my water heater. So when the time comes, they handle it. Shared costs cover snow plowing, the shared community building, upkeep of garage, outdoors and the buildings, and things like water bills and taxes paid. In particular, HOAs purchases do not need to pay a 2.5% of the purchase price fee when you purchase a home. This itself saves you quite a bit, and makes up for some of the extra you pay in monthly costs. (but pretty much all of those are at least going somewhere that benefit you anyways)

    The downsides are, there are special rules so some people that have membership may have a right to take over the winning bid in a sale. I myself used this to purchase my place, having gotten 10 years of seniority in “HOA company”. You spend the seniority with your purchase, but also are not allowed to own more than one part. Also, no long term renting so there aren’t any companies buying and renting out and things like that. You have to live in the HOA.


  • But nothing is forcing you to check exeptions in most languages, right?

    While not checking for exceptions and .unwrap() are pretty much the same, the first one is something you get by not doing anything extra while the latter is entirely a choice that has to be made. I think that is what makes the difference, and in similar ways why for example nullable enabled project in C# is desired over one that is not. You HAVE to check for null, or you can CHOOSE to assume it is not by trying to use the value directly. To me it makes a difference that we can accidentally forget about a possible exception or if we can choose to ignore it. Because problems dealt with early at compile time, are generally better than those that happen at runtime.


  • It can be pretty convenient to throw an error and be done with it. I think for some languages like Python, that is pretty much a prefered way to deal with things.

    But the entire point of Rust and Result is as you say, to handle the places were things go wrong. To force you to make a choice of what should happen in the error path. It both forces you to see problems you may not be aware of, and handle issues in ways that may not stop the entire execution of your function. And after handling the Result in those cases, you know that beyond that point you are always in a good state. Like most things in Rust, that may involve making decisions about using Result and Option in your structs/functions, and designing your program in ways that force correct use… but that a now problem instead of a later problem when it comes up during runtime.




  • I largely agree with this nodding along to many of the pitfalls presented. Except numbers 2s good refactor. I hope I won’t sound too harsh/picky for an example that perhaps skipped renaming for clarity on the other parts, but I wanted to mention it.

    While I don’t use javascript and may be missing some of the norms and context of the lanugage, creating lamda functions (i don’t know the js term) and then hardcoding them into a function is barely an improvement. It’s fine because they work well with map and filter, but it didn’t address the vague naming. Renaming is refactoring too!

    isAdult is a simple function with a clear name, but formatUser and processUsers are surprisingly vague. formatUser gives only adult FormattedUsers, and that should probably be highlighted in the name of formatUser now that it is a resuable function. To me, it seems ripe for mistaken use given that it is the filter that at a glance handles removing non-adult users before the formatting, while formatUser doesn’t appear to exepct only adult users from it’s naming or even use! Ideally, formatUser should have checked the age on it’s own and set isAdult true/false accordingly, instead of assuming it will be used only on adult Users.

    Likewise, the main function is called processUsers but could easily have been something more descriptive like GetAdultFormattedUsers or something similar depending on naming standards in js and the context it is used in. It may make more sense in the actual context, but in the example a FormattedUser doesn’t have to be an adult, so a function processing users should clarify that it only actually creates adult formatted users since there is a case where a FormattedUser is not an adult.




  • If you use it frequently, I suggest getting a GUI that have profiles or remember options so you don’t have to mess with commands all the time. I wrote my own little command line wrspper which is Windows only since I don’t have Linux to test on. Though it shouldn’t take much effort to add support.

    Makes it much more convenient when you don’t have to specify things like archive (ignore duplicates), filename to be “artist - title” (where possible), download destination, etc. Just alt-tab, Ctrl-v, Enter. And the download is running. And mine also has parallel downloads and queue for when you got many slow downloads.


  • Ultimately, I don’t see any need for users to care about ids. I’d just make a user ID column in the category table and use that for selecting categories. Rather think about a display name that is either known or made by the user.

    The only problem with increasing numbers is if you don’t properly limit access to creator account and a user can just edit the url bar to get others categories. It’s still a problem with other unique stuff, but less easy to crack when it’s not sequential.

    If you really want it, just replace ID in the url with the category name, if that is a simple string without any special characters. Actually useful for users visually, avoids numbers, users only see what they care about, still no bridging table. And the query is still a simple where user_id = x and category_name = y. This actually means non-unique names, but you are always filtering on users, so you can instead use a constraint or unique composite index on user_id and category name.

    Personally i would stick with IDs because they are simple, and don’t change so they are not prone to renaming, special character issues, and whatever else string handing deals with. And it’s probably slower.


  • Not for the rapid update that broke everything.

    See post incident report:

    How Do We Prevent This From Happening Again?

    Software Resiliency and Testing

    • Improve Rapid Response Content testing by using testing types such as:

    • Local developer testing

    • Content update and rollback testing

    • Stress testing, fuzzing and fault injection

    • Stability testing

    • Content interface testing

    • Add additional validation checks to the Content Validator for Rapid Response Content.

    • A new check is in process to guard against this type of problematic content from being deployed in the future.

    • Enhance existing error handling in the Content Interpreter.

    Rapid Response Content Deployment

    • Implement a staggered deployment strategy for Rapid Response Content in which updates are gradually deployed to larger portions of the sensor base, starting with a canary deployment.

    • Improve monitoring for both sensor and system performance, collecting feedback during Rapid Response Content deployment to guide a phased rollout.

    • Provide customers with greater control over the delivery of Rapid Response Content updates by allowing granular selection of when and where these updates are deployed.

    • Provide content update details via release notes, which customers can subscribe to.

    Source: https://www.crowdstrike.com/falcon-content-update-remediation-and-guidance-hub/



  • The difference is, with a build pattern you are sure someone set the required field.

    For example, actix-web you create a HttpResponse, but you don’t actually have that stuct until you finish the object by setting the body() or by using finish() to have an empty body. Before that point you have a builder.

    There is noting enforcing you to set the input_directory now, before trying to use it. Depending on what you need, that is no problem. Likewise, you default the max_depth to a value before a user sets one, also fine in itself. But if the expectation is that the user should always provide their own values, then a .configre(max_depth, path) would make sense to finish of the builder.

    It might not matter much here, but if what you need to set was more expensive struts, then defaulting to something might not be a good idea. Or you don’t need to have Option<PathBuf> and check every time you use it, since you know a user provided it. But that is only if it is required.

    Lastly, builder make a lot of sense when there is a lot to provide, which would make creating a strict in a single function/line very complicated.

    Example in non-rust: https://stackoverflow.com/questions/328496/when-would-you-use-the-builder-pattern