Scott Wlaschin
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scottwlaschin.bsky.social
Scott Wlaschin
@scottwlaschin.bsky.social
1.2K followers 1.1K following 17 posts
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Reposted by Scott Wlaschin
eddmann.com
Error handling often clutters code.
Fortunately, functional programming offers a more elegant way.

@scottwlaschin.bsky.social explains the 'two-track' model 🚂 (railway-oriented programming) - keeping the success path clean while ensuring errors are always handled.

🎧 compiledconversations.com/9/
September 29, 2025 at 6:26 PM
Reposted by Scott Wlaschin
eddmann.com
Programming isn't one-size-fits-all.

In Episode 9 of Compiled Conversations, @scottwlaschin.bsky.social makes the case for being multi-paradigm - using the right language for the right job. Just like a tradesperson has more than one tool, a programmer should too.

🎧 compiledconversations.com/9/
September 28, 2025 at 6:26 PM
Reposted by Scott Wlaschin
birmingham81.bsky.social
RIP Danny Thompson. Here's a playlist featuring just some of the hundreds of songs that were graced by his bass playing. Includes Nick Drake, Pentangle, Donovan, John Martyn, Sandy Denny, Marc Bolan, David Sylvian, Kate Bush, Talk Talk, Lilac Time, Julian Cope etc
▶️ open.spotify.com/playlist/4XS...
RIP Danny Thompson
open.spotify.com
September 24, 2025 at 9:05 PM
Reposted by Scott Wlaschin
eddmann.com
Writing code isn't just for computers - it's for people too.

@scottwlaschin.bsky.social explains how #DDD encourages developers to use the same language as non-developers; making code a tool for communication, not just execution.

🎧 compiledconversations.com/8/
September 23, 2025 at 5:11 PM
Reposted by Scott Wlaschin
sarahmackattack.bsky.social
I wanted to get a video of this ghost crab but every time I got close to their hole they scuttled back in, so I tried getting clever with it. I made a little sandcastle and shoved my phone into it, hit record, and walked away. Crab was VERY suspicious of this addition to their environment.
September 19, 2025 at 12:30 PM
Reposted by Scott Wlaschin
eddmann.com
Ep. 8: Domain Modeling Made Functional, Part 1 w/
@scottwlaschin.bsky.social

#DDD isn't about code - it's about communication, we discuss:
- Strategic vs tactical DDD
- (Sub)domains
- Bounded contexts & ubiquitous language
- Conway's Law & team organisation

🎧 compiledconversations.com/8/
Domain Modeling Made Functional, Part 1 with Scott Wlaschin - Compiled Conversations
Scott Wlaschin, author of "Domain Modeling Made Functional" and creator of F# for Fun and Profit, joins us to discuss the powerful pairing of DDD and functional programming. In Part 1 we focus on DDD,...
compiledconversations.com
September 17, 2025 at 8:15 AM
Reposted by Scott Wlaschin
nytpitchbot.bsky.social
Before the election, my MAGA focus group said its top priorities were ending inflation and releasing the Epstein files. Now, that same group says its top priorities are defunding scientific research and prosecuting John Bolton.
August 23, 2025 at 1:59 PM
Reposted by Scott Wlaschin
bjartnes.bsky.social
There are probably cases where we have to leave FP and do hardcore perf stuff, but with four partitions and four relatively small off the shelf containers we can do approximately 500.000 events pr second with no perf tuning and super simple code to maintain.
August 18, 2025 at 8:33 AM
Reposted by Scott Wlaschin
bjartnes.bsky.social
Kind of fun to see straight forward, functional programming in #fsharp with Result types on every single event and @scottwlaschin.bsky.social style domain driven design process 8-9 million events pr minute on a 2-core 4GB RAM Azure Container App IRL.
August 18, 2025 at 8:31 AM
Reposted by Scott Wlaschin
johnismay.bsky.social
This is a great thread and the themes here apply to so many different problems that people think can't come back, but do
loganjaffe.bsky.social Logan Jaffe @loganjaffe.bsky.social · Jul 16
As a journalist and emerging public historian, I spent much of the past week reading through transcripts of oral histories made and collected by residents of Kerr County, Texas – where flash floods killed more than 100 people this month.

There’s one recording that stood out to me. 🧵
July 16, 2025 at 3:07 PM
Reposted by Scott Wlaschin
socialistdogmom.bsky.social
they had to go with “america party” over the more natural sounding “american party” because the american party already existed and they ran george wallace for president in 1968
July 6, 2025 at 2:08 PM
Reposted by Scott Wlaschin
stephenhenry.bsky.social
Exeter, pursued by a bear
June 24, 2025 at 8:46 AM
Reposted by Scott Wlaschin
mooseallain.bsky.social
Venn diagram
Venn diagram with Bono in the left circle, an oboe in the right, and a bonobo in the centre.
June 21, 2025 at 8:27 AM
Reposted by Scott Wlaschin
maxkennerly.bsky.social
Like I've said before, if you have any doubts about climate change, just go to a super-boring insurance conference and listen to the super-boring panels where they dryly talk about the growing threat of disasters so catastrophic and unpredictable in scope they simply cannot be insured at any price.
katearonoff.bsky.social Kate Aronoff @katearonoff.bsky.social · Jun 18
Wild how the Fed chair saying that *entire regions of the United States* won’t be able to get a mortgage in the next decade barely registered as a news event
June 18, 2025 at 9:44 PM
Reposted by Scott Wlaschin
jacquelyngill.bsky.social
Last February, I led a proposal submission that encompassed six months, hundreds of hours, four institutions, a massive team, and and 256 pages. NSF just informed us that the entire Biology Integration Institute program was archived and our proposal would not even be reviewed.

With a form email.
A screen shot of an email reading: Dear Dr. Gill, Jacquelyn, I am writing to let you know that given the current budgetary projections and recent adjustment of NSF’s over-arching priorities, NSF/BIO will not be making any new awards through the Biology Integration Institutes Program. Therefore, the solicitation has been archived, and NSF has returned your proposal without review so you can re-submit it, or portions of it, to appropriate BIO programs that currently are receiving new proposals, if you wish. Sincerely, Jim Deshler Division Director (Acting) Division of Biological Infrastructure
June 16, 2025 at 10:27 PM
Reposted by Scott Wlaschin
avanscoperta.it
Where does #DomainDrivenDesign meet #FunctionalProgramming?
We are considering scheduling a new edition of @scottwlaschin.bsky.social workshop based on his famous book.

Show us your interest, subscribe to our waiting list: www.avanscoperta.it/en/training/...

Period: January - February 2026 🤩
Domain Modeling Made Functional Workshop with Scott Wlaschin
Join Scott Wlaschin's Workshop to learn how functional programming can be an excellent approach to designing reusable systems with a rich domain model.
www.avanscoperta.it
June 16, 2025 at 10:39 AM
Reposted by Scott Wlaschin
ianpkirk.bsky.social
This is great news.

We tried @mikecaulfield.bsky.social's SIFT framework last week. It was amazing - verifying and cross-referencing multiple claims using reputable sources.

Using Claude Deep Research and MCPs for browser & structured thinking we got it to list all claims then validate each one.
mikecaulfield.bsky.social Mike "looking for research fellowship" Caulfield @mikecaulfield.bsky.social · Jun 16
I whittled down the best AI based fact-checkers small enough to fit in a GPT and now it's free to everyone. It represents months of thinking how to build LLM fact-checkers and a painful night of figuring out what to rip out of it. And somehow it still works! open.substack.com/pub/mikecaul...
Deep Background GPT Released
An abbreviated version of SIFT Toolbox is now available to all as a completely free GPT
open.substack.com
June 16, 2025 at 7:29 AM
Reposted by Scott Wlaschin
tagide.com
This is a really nice blog post, and I'm touched that what I wrote back then had an impact in someone's life! Always humbling to hear these things, many years later.
faingezicht.com/articles/202...
The best tools take power away
Good tools give users agency; the best tools take it away and prevent mistakes.
faingezicht.com
June 5, 2025 at 9:22 PM
Reposted by Scott Wlaschin
rimrunner.bsky.social
Well this couldn’t have come at a better time www.bbc.com/news/article...
Scientists at Loughborough University create 'world's smallest violin'
The violin is smaller than a human hair and has "laid the groundwork" for future research.
www.bbc.com
June 5, 2025 at 9:08 PM
Reposted by Scott Wlaschin
chrislhayes.bsky.social
I'm just glad one of these men has the nuclear codes and the other has all our personal data.
June 5, 2025 at 8:24 PM
Reposted by Scott Wlaschin
salgentile.bsky.social
can’t remember where I saw it but someone realized you could get google’s AI to hallucinate elaborate explanations for fake proverbs by just typing them into search and i just checked and google still hasn’t fixed it and now i can’t stop doing it
Google AI result for “you can’t skip a rock on a frog” Google AI result for “never lick a spoon you can’t eat” Google AI result for “seven badgers up the ladder” Google AI result for “don’t bite the bat that bit you”
May 29, 2025 at 4:21 PM
Reposted by Scott Wlaschin
gregk.co.uk
A few weeks back someone was asking how the US legal system could be so impotent and accommodating of the Trump admin's incursions, and at the time I was reading 'A Nation of Enemies: Chile Under Pinochet'. This passage, about Chile's courts and judges, was instructive then, and resonates here.
The courts' reluctance to take aggressive action against the regime's abuses had equally deep roots in the formalistic legal philosophy taught in Chile's law schools, following the country's Civil Code tradition. Adhering to the precepts of European positivist doctrine that aimed at building the perfect society through enlightened legal codes, Chile's judges were trained to believe that, "when the sense of the law is clear, you cannot ignore its literal tenor on the pretext of interpreting its spirit. "40 In Chile, it was heresy to think that the law could be interpreted more broadly to fit higher principles of justice or to respond to changing social realities. "Here, there has always been the notion that the law solves everything. It is not just respect; it is exaggerated fetishism for the law," noted Judge Germán Hermosilla, who became a quiet but determined champion of judicial reform after winning the presidency of the National Magistrates' Association in 1986.41 The dispute between Allende and the Supreme Court had hinged on two sharply opposed concepts of the role of judges. Allende contended that all laws were subject to interpretation and that the courts were refusing to adapt to the "new realities" of Chilean society.4 The justices retorted that if the executive did not like the laws, it should seek to change them. But with no majority in Con-gress, Allende was unable to do so, and his judicial adversaries could always find a legal text that stymied his controversial initia-tives. With the coup, the impasse between executive and legislature was neatly resolved, and the regime needed only four signatures to THE LAW 127 create or change the law. Instead of defying the juridical order, the junta used it to construct an elaborate façade of legitimacy around dictatorial rule. From their first days in power, the commanders issued a stream of decree laws, duly debated and signed, that granted the regime a widening range of repressive powers-from the right to censor news and rescind citizenship to the authority to hold prisoners "incomunicado" without charge for five days or banish dissidents to remote villages for three months at a time. "We thought we were embarked on a mission that was best for the country. I really believed we were fighting for freedom," recalled Mónica Madariaga, whose typewriter in a tiny cubicle near Pinochet's office cranked out drafts for hundreds of early regime laws. 43 The courts, which had balked so indignantly at the "illegiti-macy" of Allende's elected government, immediately accepted the new authoritarian law-making process. Although many of the regime's executive actions and decree laws clearly defied existing statutes and the 1925 constitution, the veneer of legal formality gave timid, mediocre, or conservative judges a perfect rationale for avoiding sensitive issues. If military officials swore someone had not been detained and a string of witnesses contradicted them, for example, the law permitted a judge to reject the case for lack of conclusive proof. "Most judges were neither cowards nor heroes. They simply kept on applying the law as they always had, even though the circumstances had changed," observed one veteran appeals court judge with a reputation for independence. "Society expected them to put a brake on executive power, but just as in Nazi Germany or (Fascist] Italy, the courts were not prepared to confront an institutional crisis. The world had turned upside down, but the machinery kept functioning. "44
May 29, 2025 at 6:55 PM
Reposted by Scott Wlaschin
esqueer.net
VEO 3

Prompt: Generate a TV news anchor with a British accent, the anchor says "in shocking news, Jake Kaye Rowe ling's yacht sank with her on board after being attacked by orcas off the coast of turkey" include the announcement in the dialogue.

This took one prompt and 2 minutes to generate.
May 21, 2025 at 2:26 AM
Reposted by Scott Wlaschin
robmesure.bsky.social
I have been logged out of my toothbrush.
An Oral-B login screen.
May 29, 2025 at 11:42 AM
Reposted by Scott Wlaschin
ellamchawk.bsky.social
Today is National Biscuit Day, and it’s about time that I populated this account with biscuit (cookie) sets from the past few years. Here are some of my favourites. 🧵

First up, a set inspired by the delicious designs of William Morris and John Henry Dearle.
A set of eight rectangular cookies arranged on a square white plate against a dark wooden background. Each cookie is inspired by a wallpaper design by Morris & Co. The patterns represented feature different floral and leaf shapes in shades of baby blue, soft pink, leafy green, mustard yellow, cream, and dark grey.
May 29, 2025 at 7:05 AM