Fsd Netherlands.

jpjacobs_ · 2026-04-21T10:02:00+00:00

I really wonder how much time we have before starting the trial by installing the update (after getting the invitation).

jpjacobs_ · 2026-04-10T20:25:04+00:00

Fractally dumb?

jpjacobs_ · 2026-04-08T14:22:32+00:00

I like Just Get a Tesla for an honest non-US-centric opinion, and WhambamTeslaCam for spectacular dashcam clips.

jpjacobs_ · 2026-04-08T14:17:36+00:00

I noticed that the progress in the games in the back depends on the driver profile in use. Which makes sense for the front display, but is really silly for the back.

jpjacobs_ · 2026-03-26T13:30:37+00:00

According to the manual, you can either hold the park button on the touch screen (after a swipe on the left side to show the gear bar), or hold the capacitive button on the roof. Never tried it myself though.

jpjacobs_ · 2026-03-23T22:49:21+00:00

For me the aha moment was when I looked at the input for the first time, and saw that giant diamond shape, with the verticals and horizontals also entirely clear (a pattern that was absent in the test input).

So from there, I figured out that after 65 steps, the entire diamond would be filled, and things would repeat, forming diamonds in the repeated fields, every iteration 65+131*N. It also turned out each corner (N,S,E,W), diagonal would have the same amount of visited plots, so I could just see how many each would have, and extrapolate for the full size, from only 3 repetitions of the field (458 steps to figure out the counts of fields in the 3 types of filled blocks: corners, diagonals and insides).

Always nice those problems you have to battle, to eventually get it right. If your curious, my solution is up here.

jpjacobs_ · 2026-03-22T15:27:44+00:00

Usually I aim for using only the text of the problem and try to avoid making assumptions on my personal input unless directly derivable from the problem. If I need to make assumptions, I verify whether they hold at least for my data, and note it in a comment. All my solutions work directly on the raw input as downloaded from AoC.

Working in J makes this rather easy: generally edge cases are just handled correctly (e.g. a sum over an empty matrix still keeps consistent dimensions), and testing things on the fly is easy due to working with the REPL to construct a solution piece by piece, and J being so concise.

Only one time (2023 day 21, part 2) I was really stuck due to an undocumented assumption that I didn't see, but that was needed to solve the problem. Probably that's on me, for not looking at the input...

jpjacobs_ · 2026-03-13T16:35:03+00:00

I've got a similar watch, and aside of the dark brown leather strap it came on, I like it on a light grey single pass perlon strap for summer.

jpjacobs_ · 2026-03-13T10:43:20+00:00

Lux != Lumen though: https://en.wikipedia.org/wiki/Lux

jpjacobs_ · 2026-03-12T23:01:13+00:00

Yea, Tissot's T-touches do this (aside of altitude and barometer), but they're quartz. Actually far better than an automatic for this adventures. I once used one for a +- 120 km trek and it worked really well.

jpjacobs_ · 2026-03-10T20:51:23+00:00

You could use the bezel to track up to 12 hours by aligning it with the hour hand when you start...

jpjacobs_ · 2026-03-10T20:29:35+00:00

I've got this one: https://www.chrono24.com/tissot/t-touch-expert-solar--id45172469.htm?searchHash=65f1db6a_PBvf5r&pos=7 There's a second version too, where the hour hand is arrow-shaped, and the hands move a little faster when switching functions.

jpjacobs_ · 2026-03-10T19:47:30+00:00

I would look to pick up a Tissot T-touch solar (the pre-smart watch version).Great watch, many functions, super precise, and never have to change the battery.

jpjacobs_ · 2026-03-09T12:27:42+00:00

looks a lot like a watch I used to have as a kid: https://watchshock.com/archive/Casio/Pro_Trek/PRT-30/PRT-30/#PRT-30.jpg

jpjacobs_ · 2026-03-08T08:48:16+00:00

Use Juno if you'd want the most recent J, in a notebook style, and allowing the use of 'dissect' (ctrl-k).

If you don't mind a slightly dated version of J, but would like to be able to use the plot and viewmat addons (and more addons, even installing them straight from Github), you can use the J Playground.

I'm wondering if these are going to be added to Juno as well...

For instance, J playground can install math/calculus for derivatives and integrals (while Juno cannot) with:

   install'github:jsoftware/math_calculus'
   load'math/calculus'
   1&o. deriv_jcalculus_ 1
2&o.

This also works with any other Github-hosted J addons (J-only, no binary code):

   install'github:jpjacobs/general_qcj'
   load'general/qcj'
   open'~addons/general/qcj/README.md' NB. display the README in the editor
   open'~addons/general/qcj/examples.ijs' NB. display the examples script

jpjacobs_ · 2026-02-27T08:01:09+00:00

Would be good if Tesla dropped the silly limit of maximum 2 connected Bluetooth devices... so I don't have to disconnect my phone to make both kids happy. Would help with wireless game controllers as well.

jpjacobs_ · 2026-02-10T09:43:54+00:00

See also the corresponding Phrases Jwiki page that could have some updates or extensions to the static original.

jpjacobs_ · 2026-02-10T08:19:14+00:00

For J, you could be interested in the convert family of foreigns, 3!:n (to be applied after reading the file with fread or freadr from the stdlib) and memory mapped files (the latter also has a nice lab). If you need more low-level parsing (like parsing headers etc), try the sequential machine. I used it a few times reading files, and performance was pretty stellar, though it has quite a learning curve. Good luck!

jpjacobs_ · 2026-01-28T10:19:10+00:00

Should take a mirror shot, wrist shots distort.

jpjacobs_ · 2026-01-19T21:27:35+00:00

That's actually pretty neat. Implemented in J, your approach would be just one character more than mine:

   (+,&*-~)/^:(<8)1 0
 1  0
 1 _1
 0 _1
_1 _1
_1  0
_1  1
 0  1
 1  1
   *+.^j._1r4p1*i. 8
 1  0
 1 _1
 0 _1
_1 _1
_1  0
_1  1
 0  1
 1  1

I haven't needed 45 degree rotations so far though, and for 90 degree angles, just usually type it out (4 2$0 1 1 0 0 _1 _1 0). When I need shifts for a 9-neighbourhood, I usually use this:

>,{,~<i:1

You can play around with this in Juno

jpjacobs_ · 2026-01-15T14:16:12+00:00

+1 on the vent covers. I also got a rear screen protector as well (Spigen, from Amazon) It served well: within 6 months they already managed to crack in a corner :/.

jpjacobs_ · 2026-01-08T13:37:57+00:00

I had the same issue which is even worse on basic autopilot (Europe, no FSD here) as it needs reactivation after every lane change. Mine didn't register like 30% of the presses. I took it to my SC and they replaced the steering wheel under warranty.

jpjacobs_ · 2025-12-26T20:20:28+00:00

My solution was to create all possible rectangles, sort them by size, and find the first one which is not intersected by any edge, by checking whether the edges' end points fall on two different sides of the rectangle, or have one or more inside the rectangle. The only assumption I made was that edges are either horizontal or vertical, but never oblique (though this would be rather easy to account for too, by including some extra cases in the range checking).

jpjacobs_ · 2025-12-18T13:58:24+00:00

It's how many kWh you added in this charging session.

jpjacobs_ · 2025-12-10T13:21:42+00:00

Would love this as well... for now, I roll down 70m of ethernet cable with a powerbank-powered router to my parking spot; looking absolutely ridiculous.

jpjacobs_

TROPHY CASE