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penryu

@penryu

ecce consequentiae factorum. Rust aficionado. Functional programming advocate. Final Fantasy collector. Vim fanboi. Oxford comma proponent. Armchair etymologist and reluctant descriptivist. Opinions my own. No shilling. Cat photos will be liked.

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01.08.2023
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Latest posts by penryu @penryu

Bringing this back for as long as they keep remaking it.

09.03.2026 19:16 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hai Karate Kid

09.03.2026 19:13 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I wouldn't mind some more elegant combinators for dealing with Options and Results, and compositions thereof. The existing ones are pretty functional, but kinda clumsy and verbose.

08.03.2026 20:55 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

We'll stop using the word when it stops being accurate.

02.03.2026 23:09 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

OH "We'll stop using the word when it stops being accurate."

02.03.2026 23:07 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Cyclic Redundancy Check (CRC) - Computerphile
Cyclic Redundancy Check (CRC) - Computerphile YouTube video by Computerphile

youtu.be/_x0vbnUKYSU

This time with an embedded link

25.02.2026 17:22 ๐Ÿ‘ 14 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

How do we know the random series of bits we just sent down your cable didn't get corrupted on the way? With CRCs! But what are these mysteries checks...I try to explain on today's @computerphile.bsky.social !https://youtu.be/_x0vbnUKYSU

25.02.2026 16:13 ๐Ÿ‘ 19 ๐Ÿ” 1 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
a group of cats thinking, "I can't wait for Discord to collapse so MY chat protocol can rise from the ashes!"

a group of cats thinking, "I can't wait for Discord to collapse so MY chat protocol can rise from the ashes!"

19.02.2026 20:55 ๐Ÿ‘ 1113 ๐Ÿ” 283 ๐Ÿ’ฌ 11 ๐Ÿ“Œ 3

I would mention that another discord has an irc bridge, but that would only mean a lot more legwork for you guys, so won't mention it... and just grumble about discord instead. ๐Ÿ˜…

25.02.2026 00:21 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Why do I have to pretend that I'm going to print something in order to save it as a PDF. Why do I have to engage in a little ruse.

23.02.2026 21:43 ๐Ÿ‘ 19292 ๐Ÿ” 2925 ๐Ÿ’ฌ 344 ๐Ÿ“Œ 1

Ok, two things:

1) The Onion is a national treasure.

2) I totally read that as "Rewind your children."

22.02.2026 08:17 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

@whiskey.fm is there any talk about moving the ww&w community off of discord?

22.02.2026 06:00 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Who said yo-yos are silly?!

21.02.2026 10:02 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Some guy literally just showed up at my door and accused me of stealing his door-dash order.

18.02.2026 02:54 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The C++ standard is the katamari-damacy-cumulative-junk-demon from Akira.

It absorbs everything it encounters, devouring allies and sanity with every crushed ideal.

17.02.2026 00:54 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A die photo of the 8087 chip, with the main functional blocks labeled. The chip is a tan rectangle with complex patterns in dark brown. Many of the patterned regions are textured rectangles. One of the largest rectangles is the microcode ROM in the middle. The bottom half of the chip is the datapath, performing operations on floating-point numbers. The instruction decoding happens in the upper left. Around the edges of the chip, bond wires connect the chip to the 40 external pins, but the pins are not visible, just short segments of the bond wires.

A die photo of the 8087 chip, with the main functional blocks labeled. The chip is a tan rectangle with complex patterns in dark brown. Many of the patterned regions are textured rectangles. One of the largest rectangles is the microcode ROM in the middle. The bottom half of the chip is the datapath, performing operations on floating-point numbers. The instruction decoding happens in the upper left. Around the edges of the chip, bond wires connect the chip to the 40 external pins, but the pins are not visible, just short segments of the bond wires.

In 1980, Intel released the 8087 floating-point chip, making math much faster. I'm reverse-engineering this chip, 46 years later. Most of its instructions are implemented in microcode, but some are implemented in hardware. Let's look at the circuitry that decodes instructions and decides what to do.

14.02.2026 17:46 ๐Ÿ‘ 134 ๐Ÿ” 27 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

Iโ€™ve said it before and Iโ€™ll say it again: Apple shouldnโ€™t need to *trick* people into installing Tahoe, and yet its Settings > General > Software Update UI seems intent on doing just that.

15.02.2026 17:15 ๐Ÿ‘ 14 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I'm right there with you. Emacs is great at so many things, but code editing just wasn't one of them.[*]

[*] Except lisp... It was always incredible at helping me edit my init.el

15.02.2026 07:10 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
"the last decade five decades. But let me make an interesting historical point and this is maybe due to my age. Uh there's been generation after generation of AI scientists since the 1950s claiming that the technique that they just discovered was
going to be the ticket for human level intelligence. 

You you see declarations
of Marvin Minsky, Newan Simon, um you know, Frank Rosenblad who invented the perceptron, the first learning machine in 1950 saying like within 10 years we'll have machines that are as smart as humans.

They were all wrong. This
generation with LLMs is also wrong. I've seen three of those generation in my lifetime. Okay. Um so, you know, it's it it's just another example of being fooled"

"the last decade five decades. But let me make an interesting historical point and this is maybe due to my age. Uh there's been generation after generation of AI scientists since the 1950s claiming that the technique that they just discovered was going to be the ticket for human level intelligence. You you see declarations of Marvin Minsky, Newan Simon, um you know, Frank Rosenblad who invented the perceptron, the first learning machine in 1950 saying like within 10 years we'll have machines that are as smart as humans. They were all wrong. This generation with LLMs is also wrong. I've seen three of those generation in my lifetime. Okay. Um so, you know, it's it it's just another example of being fooled"

"AI Fails at 96% of Jobs (New Study)": www.youtube.com/watch?v=z3ka...

15.02.2026 05:39 ๐Ÿ‘ 8 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Two's Complement A Programming Podcast by Ben Rady and Matt Godbolt

New Two's Complement Episode: How Fast is Fast?

Ben interviews Matt with a deceptively simple question: make my program go fast. 44 minutes later, robot dogs are falling over, Grace Hopper's wire turns up, and Matt still hasn't gotten the job.

Listen at: twoscomplement.org#podcast/how-... :)

14.02.2026 22:50 ๐Ÿ‘ 21 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

YES! The only vcs tool I've ever contributed to! ... and I think my only public PR written in Go!

14.02.2026 15:09 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Me using git in 2024: "it has a few rough edges, sure, but it's really nice!"

Me using git in 2025, having used jj for 2 months: "HOW DO YOU PEOPLE LIFE LIKE THIS?!"

14.02.2026 00:45 ๐Ÿ‘ 11 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

FTR, they don't even hide it. They proudly declare on their security dashboard that they saved me multiple times from an "infected site." They just gloss over that my salvation required them to impersonate any number of third-party hosts.

12.02.2026 01:08 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

This _is_ bad, right? I'm not crazy?

ISPs intercepting traffic intended for other hosts AND RESPONDING AS THEM?

12.02.2026 00:24 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

But seriously... secure your DNS traffic. You never know who is watching... or how they might use it against you.

Use DNS-over-TLS or DNS-over-HTTPS, and use it with a server you trust.

11.02.2026 07:31 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Then I highly recommend Comcast Business!

They'll MitM your precious network traffic, tell you it's for your own good, AND bill you!

Truly a full service experience, and great practice for that network security training!

Now available in both corporate and home varieties!

11.02.2026 03:24 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Have you spent half your professional life learning how prevent and respond to cybersecurity threats, but just don't have any bad actors attacking you?

Have you ever wanted to practice what you've learned, AND pay for the privilege?

11.02.2026 03:24 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Aston Villa Football Fans GIF โ€“ Aston villa Villa Football fans โ€“ discover and share GIFs Click to view the GIF

Dear Comcast "Security Edge":

tenor.com/en-GB/view/a...

Love,
penryu

07.02.2026 10:26 ๐Ÿ‘ 0 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I figured it was a crack about the state of technology in New Zealand... tongue-in-cheek like everything else in the show obviously

10.02.2026 00:53 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

For all those coming to our town for the โœจ๐Ÿฆ‰ tomorrow, traffic WILL be terrible.

But our thoughts and prayers go out to those blindsided by the fact that the 49ers haven't played in SF for a very long time, and who got a hotel up in the city... 40 miles away. You're in an especially fun time.

07.02.2026 23:21 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0