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Cake day: June 17th, 2023

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  • Random programming certificates are generally worthless. The course to get them might teach you a lot and be worth while, but the certificate at the end is worthless. If it is free then it does not matter too much either way, might be a good way to test yourself. But I would not rely on it to get you a job at all. For that you need other ways to prove you can do the job - typically with the ability to talk about stuff and having written some real world like application. Which a course might help you do to.



  • The only things not linked to cancer are the things not yet been studied. Seems like everything at some point has been linked to cancer.

    The data showed that people who ate as little as one hot dog a day when it comes to processed meats had an 11% greater risk of type 2 diabetes and a 7% increased risk of colorectal cancer than those who didn’t eat any. And drinking the equivalent of about a 12-ounce soda per day was associated with an 8% increase in type 2 diabetes risk and a 2% increased risk of ischemic heart disease.

    Sounds like a correlation… someone who eats one hot dog and drinks one soda per day is probably doing a lot of unhealthy things.

    It’s also important to note that the studies included in the analysis were observational, meaning that the data can only show an association between eating habits and disease –– not prove that what people ate caused the disease.

    Yup, that is what it is. A correlation. So overall not really worth the effort involved IMO. Not eating any processed meats at all is not likely a big issue, but your overall diet and amount of exercise/lifestyle. I would highly suspect that even if you did eat one hotdog per day, but had a otherwise perfect diet for the rest of the day and did plenty of exercise, got good sleep and all the other things we know are good for you then these negative effects would likely becomes negligible. But who the hell is going to do that? That’s the problem with these observational studies - you cannot really tease out the effect of one thing out of a whole bad lifestyle.

    I hate headlines like this as it makes it sounds like you can just do thins one simple thing and get massive beneficial effects. You cannot. You need to change a whole bunch of things to see the types of reduction in risk they always talk about. Instead they always make it sounds like if you have even one hot dog YOU ARE GOING TO DIE.





  • Never said it had to be a text file. There are many binary serialization formats that could be used. But is a lot of situations the overhead you save is not worth the debugging effort of working with binary data. For something like this that is likely not going to be more then a GB or so, probably much less it really does not matter that much if you use binary or text formats. This is an export format that will likely just have one batch processing layer on. This type of thing is generally easiest for more people to work with in a plain text format. If you really need efficient querying of the data then it is trivial and quick to load it into a DB of your choice rather then being stuck with sqlite.


  • export tracking data to analyze later on

    That is essentially log data or essentially equivalent. Log data does not have to be human readable, it is just a series of events that happen over time. Most log data, even what you would think of as traditional messages from a program, is not parsed by humans manually but analyzed by code later on. It is really not that hard to slow to process log data line by line. I have done this with TB of data before which does require a lot more effort to do. A simple file like this would take seconds to process at most, even if you were not very efficient about it. I also never said it needed to be stored as text, just a simple file is enough - no need for a full database. That file could be binary if you really need it to be but text serialization would also be good enough. Most of the web world is processed via text serialization.

    The biggest problem with yaml like in OP is the need to decode the whole file at once since it is a single list. Line by line processing would be a lot easier to work with. But even then if it is only a few 100 MBs loading it all in memory once and analyzing it all in memory would not take long at all - it just does not scale very well.



  • There is in this case, and why Linus did accept the patch in the end. Previous cases less so though which is why Linus is so pissed at this one.

    The reason for this new feature is to help fix data loss on users systems - which is a fine line between a bug and a new feature really. There is precedent for this type on thing in RC releases from other filesystems as well. So the issue in this instance is a lot less black and white.

    That doesn’t excuse previous behaviour though.



  • The attack is known as the evil maid attack. It requires repeated access to the device. Basically if you can compromise the bootloader you can inject a keylogger to sniff out the encryption key the next time someone unlocks the device. This is what secure boot is meant to help protect against (though I believe that has also been compromised as well).

    But realistically very few people need to worry about that type of attack. Encryption is good enough for most people. And if you don’t have your system encrypted then it does not matter what bootloader you use as anyone can boot any live usb to read your data.




  • There is not really one best distro out there - or else there would only be one distro. But for someone new you will find basically any mainstream/popular distro good enough for your usecase. The best one for you will come down to personal preference and will likely - at least at the start - be centered on which desktop environment you like the most. KDE will probably feel more like Windows. Though gnome I think tends to be the default on most distros. You will find popular distros have multiple flavors with various desktop environments as well. Your best bet is to download a few and put them on a usb and try them out before installing. That will give you a better idea of what you want.Or just pick one and go for it if you don’t care that much - it will probably be good enough.


  • It does not matter if the battery is plugged in or not. Far more important is the state of the battery. All LiPo batteries degrade over time. But they can degrade faster or slower depending on the state they are stored in. They degrade faster when at higher charge levels or when stored in hotter environments or if they go through more charge/discharge cycles. Older battery technology also degraded faster in general, new ones tend to last longer in sub-optimal conditions.

    Apart from newer battery technology itself battery monitoring and charging technology has also improved. A lot of modern laptops have smarter charging circuitry that lets them stop charging before the battery is at 100%, sometimes configurable in the bios, sometimes controllable via the OS. This can help a lot to preserve the battery life for longer, especially if you leave it plugged in as it spends less time at 100% charge. Older devices also tended to run hotter for longer periods of time, even when idle. Both of these combined with worst battery technology would lead to batteries degrading quite a lot faster if you left them plugged in all the time - hence where the advice came from (note that removing the battery at 100% charge was also not great for it, better to store lipo batteries at 40-60% charge, but it did still save it from the heat of the device) . But when setup correctly modern devices suffer from this a lot less so it is much less important to remove the battery at all - I doubt you would really notice the difference overall on modern systems.


  • will charge the battery and then start running directly from the wall-power once the battery is full. They bypass the charging once it is indicated to have a “full charge”.

    That does not make sense. Batteries cannot be charged and discharged at the same time - they are either charging or discharging or neither. When a device is in use while it is plugged in the device is being run directly from wall power - and anything left if sent to charge the battery. The only devices that don’t do that is ones that power off while the charger is plugged in - which does not include any laptop that I have ever seen, generally just smaller devices.

    Modern laptops have smarter controllers that can turn off charging before the battery is full or when other conditions are met. But none are able to draw power from the battery while the battery is being charged - that just does not make any sense.


  • Huh? If it can be used while it is charging - which is all laptops since forever - then it will run off the adapter while plugged in. Regardless of the battery state. You cannot charge a battery and discharge it at the same time - if it is charging then power must be coming from anything other then the battery. Epically with LiPo batteries which you cannot continue charging after they are full - doing so will cause them to burst into flames. So all LiPo charging circuits will cut off power to the cells once they reach a desired voltage - weather that is considered 100% (aka once it reaches 4.2V) or at a configurable lower amount.