vain @www.uninformativ.de

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Recent Twts

Recent twts from vain

movq @www.uninformativ.de
 (3d ago)

Omg, Python. Parsing arguments with argparse takes 50 ms on my NUC, because this pulls in all kinds of fancy stuff behind the scenes, colorization and what not. šŸ˜®ā€šŸ’Ø

#gjiiaeq
movq @www.uninformativ.de
 (3d ago)

Another project where Iā€™m going to use my terminal widget toolkit is a hex editor. This is still very young, obviously, and thereā€™s a lot of work to do (both in the toolkit and this particular application), but Iā€™m making some progress:

https://movq.de/v/2bae14ed16/vid-1769283187.mp4

Since this program is UTF-8 clean (I hope), you can do things like enter multi-byte UTF-8 sequences or paste them from the system clipboard (another hex editor I just tried failed to do this correctly):

https://movq.de/v/e9241034c1/vid-1769283755.mp4

Under the hood, Iā€™m using mmap() with MAP_PRIVATE, which is really cool: I get the entire file as a byte array, no matter how large it is, no need to actually read it upfront; and MAP_PRIVATE means that I can write to this area however I like without changing the underlying file. The kernel does copy-on-write for me. Only when you hit Save, it will write to the filesystem. And itā€™s just a couple lines of code. The kernel does all the magic. šŸ„³

#ihycs7q
movq @www.uninformativ.de
 (6d ago)

My washing machine is making funny noises and Iā€™m this šŸ¤ close to just throwing it out and washing everything by hand, instead of buying another expensive enshittified product thatā€™s designed to break down in a couple of years.

Washing is easy anyway, the spin cycle to dry that stuff is the important part ā€¦

#bb54rfq
movq @www.uninformativ.de
 (1w ago)

Spent basically the entire day (except for the mandatory walk) fighting with Pythonā€™s type hints. But, the result is that my widget toolkit now passes mypy --strict.

I really, really donā€™t want to write larger pieces of software without static typing anymore. With dynamic typing, you must test every code path in your program to catch even the most basic errors. pylint helps a bit (doesnā€™t need type hints), but thatā€™s really not enough.

Also, somewhere along the way, I picked up a very bad (Python) programming style. (Actually, I know exactly where I picked that up, but I donā€™t want to point the finger now.) This style makes heavy use of dicts and tuples instead of proper classes. That works for small scripts, but it very quickly turns into an absolute mess once the program grows. Prime example: jenny. šŸ˜©

I have a love-hate relationship with Pythonā€™s type hints, because they are meaningless at runtime, so they can be utterly misleading. Iā€™m beginning to like them as an additional safety-net, though.

(But really, if correctness is the goal, you either need to invest a ton of time to get 100% test coverage ā€“ or donā€™t use Python.)

#4yvgryq
movq @www.uninformativ.de
 (1w ago)

So, are you guys up for an experiment?

Iā€™m really not happy with the domain ā€œuninformativ.deā€ anymore. Iā€™m going to switch to ā€œmovq.deā€ soon (or maybe something else if I get another fancy idea).

If I keep the url = field in my twtxt file, nothing should break, right? Right? šŸ¤£

#i6mgd3a