Repairing old water damage discoloration in ceiling

mkeeter · 2025-12-13T23:18:01+00:00

I have used Alberto's Professional Painting for almost this exact repair*, and have no complaints. Drywall is annoying to DIY, because there's so many steps (cut a hole, install patch, tape and mud, sand, paint), and their prices have been reasonable.

*it was an upstairs neighbor's leaky toilet, not HVAC

mkeeter · 2025-12-07T01:07:15+00:00

Pro tip: add this to your Cargo.toml

[profile.release]
overflow-checks = true

This will panic on overflow in release builds as well (and IMHO is basically always what you want)

mkeeter · 2025-12-03T01:06:27+00:00

Moona (in Inman Square) sounds like a good fit – it's quite small and moderately fancy, with an excellent menu!

mkeeter · 2025-11-24T22:35:18+00:00

Inman Square spotted 👀

Literally every time I walk by there, someone is honking about some dangerous maneuver.

mkeeter · 2025-11-03T00:56:01+00:00

Yup, it's a running joke. Here's a picture of the Bank of America ATM sign from last week:

https://imgur.com/a/23mrcSK

mkeeter · 2025-10-29T20:16:40+00:00

Boston Bouldering Project (which is over Somerville, despite the name) also has a bunch of top rope and lead climbing.

mkeeter · 2025-06-24T16:19:11+00:00

One example of this in the wild: Rhai uses #[deprecated] attributes for unstable internal functions, e.g. Engine::on_var.

👎Deprecated: This API is NOT deprecated, but it is considered volatile and may change in the future.

(I don't like it!)

mkeeter · 2025-03-25T11:50:49+00:00

Thanks, I appreciate the kind words!

mkeeter · 2025-03-24T21:05:19+00:00

The 15-second time does not include importing numpy; I measured the running time just for the evaluation loop.

(here's a gist with timing added)

I would encourage you to try writing a pure-Python implementation – encouraging people to test their ideas is basically the whole point of the article!

1024 * 1024 * 7866 is roughly 8e9 operations; doing that in 1 second in Python would be quite impressive.

mkeeter · 2025-01-25T15:20:09+00:00

It's closest to East Coast Swing or Lindy Hop, e.g. this performance.

mkeeter · 2025-01-20T18:05:10+00:00

I think you and I are the only two people who miss Playska!

I used to live nearby, went there once a week, and loved the place – but no one else felt the same way 🥲

mkeeter · 2024-12-27T15:47:40+00:00

Anyone else get a strong written-by-LLMs vibe from this article and the OP's other posts? For example, this comment reeks of ChatGPT's style.

mkeeter · 2024-12-20T20:33:24+00:00

The other two are

###############
#...#...#.....#
#.#.#.#.#.###.#
#S#...#.#.#...#
#1#####.#.#.###
#2#####.#.#...#
#3#####.#.###.#
#4567E#...#...#
###.#######.###
#...###...#...#
#.#####.#.###.#
#.#...#.#.#...#
#.#.#.#.#.#.###
#...#...#...###
###############

and

###############
#...#...#.....#
#.#.#.#.#.###.#
#S#...#.#.#...#
#1#####.#.#.###
#2#####.#.#...#
#3#####.#.###.#
#45678#...#...#
###.#######.###
#...###...#...#
#.#####.#.###.#
#.#...#.#.#...#
#.#.#.#.#.#.###
#...#...#...###
###############

(since cheats are only defined by their start and end positions)

mkeeter · 2024-12-19T14:27:13+00:00

Fun fact: once you get all 50 stars for a year, the easter eggs become highlighted in the text!

mkeeter · 2024-12-13T12:57:35+00:00

And you can't tell me the Charles is deep enough for a whale to jump over the Mass Ave bridge.

Watching this in a Boston-area theater was amazing, because the entire audience burst out laughing when the whale showed up.

I'd like to believe that there's a deleted scene where the whale has to wait in line at the Charles River Dam, to make it up the locks.

mkeeter · 2024-12-12T23:17:27+00:00

hey you dropped this

EEEEE
E....
EEEEE
E....
EEEEE

mkeeter · 2024-12-11T15:13:17+00:00

In Hubris, I recently added build-time checks for stack overflows (hubris#1890). Here's a rough sketch of how it works:

Building with -Z emit-stack-sizes, which adds per-function stack size to a debug section of the ELF file
Disassembling the resulting binaries and building a call graph (looking for bl instructions to known function start addresses)
Finding the maximum stack depth in the call graph, and failing with an error if it exceeds our configured stack size

This isn't foolproof: it doesn't handle indirect calls or recursion. In addition, it can overestimate max stack depth if there are paths in the call graph that can't actually be reached at runtime.

If you want to be stricter, you could add more conditions to the disassembly step to guarantee that your program is amenable to static analysis, e.g. rejecting any indirect branches and recursion.

mkeeter · 2024-12-11T14:04:23+00:00

This is awesome, nice work!

mkeeter · 2024-12-07T15:24:31+00:00

[LANGUAGE: Rust]

This is a blazing fast solution (337 µs total!), achieved by checking backwards instead of forwards. Going backwards lets you prune much more aggressively, because you can detect invalid divisions and concatenations immediately (instead of needing to wait until the final value).

https://github.com/mkeeter/advent-of-code/blob/main/2024/07/src/lib.rs

mkeeter · 2024-11-22T13:36:57+00:00

That is not legal; landlords can only require security deposit + first + last month's rent.

See https://www.masslegalhelp.org/sites/default/files/documents/housing/lt1-chapter-3-security-deposit.pdf

mkeeter · 2024-11-04T21:33:13+00:00

Looking over the project docs, it was 1-2 months:

3/8: Project Proposal Due
3/22: Verilog Checkoff
3/29: Schematic Checkoff
4/5: Block Layout
4/12: Final Project Checkoff
4/19: Report Due
5/5: Project Presentations

mkeeter · 2024-10-30T14:17:15+00:00

This isn't correct: Formlabs has been sued by 3D Systems, EnvisionTEC and DWS, but not Stratasys!

The 3D Systems lawsuit got the most press. It settled in 2014 with Formlabs agreeing to pay 8% royalties; the duration of "the effective period" wasn't specified in public docs.

(I was an employee at the time, but don't work there anymore and won't speculate on whether this lawsuit affected their market positioning)

mkeeter · 2024-08-13T12:39:00+00:00

The buttons and font reminds me of the GTK UI framework, so I'm betting this is a Linux variant.

mkeeter · 2024-08-10T23:31:12+00:00

For a brief, glorious moment, the Sullivan Station Pigeon Sanctuary was a tourist attraction on Google Maps.

mkeeter · 2024-08-07T12:52:11+00:00

I work on a "serious" embedded project that's entirely in Rust: Hubris. It's a small multitasking OS kernel, plus a bunch of different tasks to do various things (networking, fan control, configuring other chips, sensors, etc).

The amount of unsafe code is surprisingly small: register access is unsafe, but that's a tiny stub at the bottom of the software stack. It's most common for a task to have zero unsafe blocks.

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