Haha, I’ve been waiting for the 4K/8K reference in this volume. Poor Anna.
I like programming and anime.
I manage the bot /u/mahoro@lemmy.ml
Haha, I’ve been waiting for the 4K/8K reference in this volume. Poor Anna.
TIL this exists
I also like the POSIX “seconds since 1970” standard, but I feel that should only be used in RAM when performing operations (time differences in timers etc.). It irks me when it’s used for serialising to text/JSON/XML/CSV.
I’ve seen bugs where programmers tried to represent date in epoch time in seconds or milliseconds in json. So something like “pay date” would be presented by a timestamp, and would get off-by-one errors because whatever time library the programmer was using would do time zone conversions on a timestamp then truncate the date portion.
If the programmer used ISO 8601 style formatting, I don’t think they would have included the timepart and the bug could have been avoided.
Use dates when you need dates and timestamps when you need timestamps!
Do you use it? When?
Parquet is really used for big data batch data processing. It’s columnar-based file format and is optimized for large, aggregation queries. It’s non-human readable so you need a library like apache arrow to read/write to it.
I would use parquet in the following circumstances (or combination of circumstances):
Since the data is columnar-based, doing queries like select sum(sales) from revenue
is much cheaper and faster if the underlying data is in parquet than csv.
The big advantage of csv is that it’s more portable. csv as a data file format has been around forever, so it is used in a lot of places where parquet can’t be used.
Wow everyone seems to love P3 but I actually liked P4 better. I mean I really enjoyed both, but P4 was a more immersive experience for me. I should reboot my vita and play it again.
I really felt like P4 had deeper connections and relationships between the characters. It felt more real, and that made the tension in the game more exciting. I love every second of it and am still trying to find a game like it.
Don’t get me wrong, P3 was great also. The gameplay was superb and the characters were all great. But P4 still has a special place in my heart.
They’re asking for TV manufacturers to block a VPN app in the TV. Not to block VPN in general.
Hadn’t realized what a banger this season is for me as a SOL/RomCom lover. Just caught up with Makeine, Alya, and Gimai Seikatsu. I’ll probably pick up Giji Harem after it all airs. I usually watch 4-5 shows per year, so having 4 in one season is great.
Yes it can be an issue because the GPS doesn’t know where you are and thinks you are on an aboveground street. Freeway tunnels can have multiple exits too.
I’m shocked.
Most of us have bad memories of over-complex hierarchies we regret seeing, but this is probably due to the dominance of OOP in recent decades.
This sentence here is why inheritance gets a bad reputation, rightly or wrongly. Inheritance sounds intuitive when you’re inheriting Vehicle
in your Bicycle
class, but it falls apart when dealing with more abstract ideas. Thus, it’s not immediately clear when and why you should use inheritance, and it soon becomes a tangled mess.
Thus, OO programs can easily fall into a trap of organizing code into false hierarchies. And those hierarchies may not make sense from developer to developer who is reading the code.
I’m not a fan of OO programming, but I do think it can occasionally be a useful tool.
Ehhh, I don’t quite agree with this. I’ve done the same thing where I used a timestamp field to replace a boolean. However, they are technically not the same thing. In databases, boolean fields can be nullable so you actually have 3-valued boolean logic: true
, false
, and null
. You can technically only replace a non-nullable field to a timestamp column because you are treating null
in timestamp as false
.
Two examples:
A table of generated documents for employees to sign. There’s a field where they need to agree to something, but it’s optional. You want to differentiate between employees who agreed, employees who disagreed, and employees who have yet to agree. You can’t change the column from is_agreed
to agreed_at
.
Adding a boolean column to an existing table. These columns need to either default to an value (which is fair) or be nullable.
So cool!! Mercury is definitely the most mysterious inner planet due to its difficulty to get a space probe there even though it’s the closest planet.
The spacecraft will arrive next year, and I can’t wait for all the Science it will uncover!