JetBrains .NET Days Online 2025 is back! 🥳 📅 Oct 8–9 (free, online) .NET Aspire, Clean Architecture, Blazor TDD, GenAI + Semantic Kernel, F#, performance, cloud logging & more. Save your spot ➜ jb.gg/ddn2025 #JBDotNetDays #dotnet #csharp #aspnetcore #GenAI

Always fascinating to see how people react when you point out the advantages of using #fsharp over #csharp lnkd.in/p/e6HTQdDM

Current situation (10000km on this bike since June 2023) #eMTB

"Testen oder nicht testen? Das ist die Frage." am 24. September um 18:00 an der .Net Usergroup Zentralschweiz in Luzern. Wir gehen der Frage nach, welche Tests wir durch andere Mittel ersetzen können. www.meetup.com/net-usergrou...

In my younger years, we had not just Scrum (and SAFe), but also XP, Crystal, FDD, DSDM and more. We had Gamestorming, World Café, Open Spaces - not just Liberating Structures. What happened that we, as a community, reduced ourselves to more or less single approaches?

Thank you for weaving my post weaving others in. :) Lisanne Bainbridge’s Ironies of Automation!! Only gets more relevant?!! www.complexcognition.co.uk/2021/06/iron...

F# Weekly #34, 2025 - FsiX: new F# REPL with hot reloading #fsharp sergeytihon.com/2025/08/24/f...

Don't miss our next meet-up with William Brander about "Top 5 techniques for building the worst microservice system ever" on Wednesday in Lucerne at 18:00. Followed up with great discussions and a drink. www.meetup.com/net-usergrou...

"F# is like writing pseudocode that compiles!" I agree 😀

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.

If you're building healthcare solutions, consider F# for its blend of safety, clarity, and .NET integration. #FSharp #FHIR #HealthIT #DDD #FunctionalProgramming

Prompt engineering is knowing the correct answer and trying to get the chatbot to produce it.

Common terms in F# that I hadn't heard before coding with it: * Computation expressions * Railway-oriented programming * Partial application * Currying * Monads * Discriminated Unions * Exhaustive pattern matching Reason #7 F# Sucks - You start talking weird hamy.xyz/blog/2025-06... #fsharp

Nice list of changes in Rider for #fsharp: github.com/JetBrains/re...

Great #dotnet #fsharp lang review youtu.be/CmML57XX2eg?... 🦔✨💕

So you are a CLEAN CODER - really? Two async funcs: - Classic style: scroll & chase vars - Pipeline style: see every step in order, linear data flow, no “what’s this var now?” 💡 Idiomatic in #fsharp 😅 Possible in #csharp, less readable & less accepted ❌ Not practical in #typescript / #javascript

Today, I found a nice place for lunch with my #eMTB.

I read over and over again on social media that LLMs get developers to 80% quickly. What they forget is that the second 80% - it is never just the remaining 20% - takes 5 times as long as the first 80% 😂

After the summer break, we’re back! 🎉 @williambza.bsky.social is here to teach you how to destroy a microservice system (so you know how to save yours). 📅 27th August – Top 5 techniques for building the worst microservice system ever www.meetup.com/net-usergrou... #Microservices

Am 9. September gebe ich an den Workshop-Tagen 2025 an der ETH Zürich den Workshop "Softwarearchitektur durch Beispiele lernen". Übung macht den Meister. Darum üben wir in mehreren Runden das Erstellen einer Architektur. Programm und Anmeldung: workshoptage.ch

Two lists. Same values. Same order. Still not equal? 🤔 In #csharp and JS/TS, == checks if lists are the same object, not if they have the same contents. Even .Equals() in C# won’t do structural comparison by default. Not so in #python and #fsharp ❤️

Believe it or not: one of the few (only?) hardware projects driven by #fsharp (yes – and #typescript) is a – guess – a FUN project! Yes ;) #pxlclock will bring beautiful colors into your rooms, and joy of programming your own ideas. Search pxlclock – buy one of only 💯 🙏🙏🙏🙏

just a reminder again that we were told over and over that a 13 year old downloading a Limp Bizkit mp3 was an existential threat to society

F# Weekly #32, 2025 - Call for Speakers: .NET Conf 2025 & JetBrains .NET Days #fsharp sergeytihon.com/2025/08/10/f...

The first official #pxlclock order ever!! Shout out to @dawe.fosstodon.org.ap.brid.gy (sell if for billions in 10 years; after heavy inflation :), shout out to all #fsharp community for giving vibes (just ❤️ to all). @dsyme.bsky.social @scottwlaschin.bsky.social no 2 + 3 reserved whenever appreciated

Years ago, I started building my own HTTP lib for #fsharp - #fshttp - and loved it, especially the connections to people. Now, parts of our #pxlclock software are open source too, and it even got us to Google #1! Only 100 clocks will be sold! Please support us - comments & reposts appreciated 🤗

On my way home #eMTB

Good night

This is the single best piece I've read on "replacing coders with AI," it fully dispells the myth from the perspective of a software engineer and does so in a calm, reasonable way. colton.dev/blog/curing-...

When I think of IKEA, I picture colorful memories, fresh ideas, and clever little hacks that always bring a smile to my face. So, next time you’re planning to build a pixel frame - just let us know 😉 P.S. Look closely 👀 ❤️ #pxlclock #pxlart

I've had preview access to GPT-5 for a couple of weeks, so I have a lot to say about it. Here's my first post, focusing just on core characteristics, pricing (it's VERY competitively priced) and interesting details from the GPT-5 system card simonwillison.net/2025/Aug/7/g...

Todays short but awesome e-mountain bike tour went up to Fronalpstock, back down to Stoos and around the Firenstöckli. 21km, 1050m elevation gain, 1:35 duration #eMTB

Current situation

Tour summary

On my way to the second part of our summer vacation (this time by #eMTB). I started along lake Zug.

The moon is rising.

Boost your .NET projects with Spargine’s ListExtensions! 🚀 Enhance List<T> with high-performance methods for adding, removing, converting, and more. Now optimized for .NET 8! 🔥 Read more. #dotNET #CSharp #OpenSource #MVPBuzz

We standardized our C# code style, fine-tuned hundreds of built-in Roslyn analyzers and MSBuild properties, all bundled into a single reusable NuGet package. No more EditorConfig files! Learn more at medium.com/p/02ff340b4a96 🧵Learnings and benefits in thread... #dotnet #csharp

Current location #eMTB

Are you following me for my software architecture or F# content? If yes, what would you like to read about? #fsharp #SoftwareArchitecture

One of the side-effects of the Startup model / entry points in modern .NET is people forget to design good bootstrapping code, so every .NET process just looks like a bunch of DI registrations that doesn't hint at what a program does. Horrible second order effect. Kinda hate it.

My notes on Ian Cooper's talk on responsibility-driven development. www.planetgeek.ch/2025/07/25/s... #DDD

What happens with time savings thanks to AI tools? This is where things get really weird... Laura Tacho is the CTO at DX, and lives and breathes developer productivity. We talk about how to separate signal from noise, and what data today tells us about AI tools and developer efficiency.

This thread is incredible.

Hey friends! I did a TEDx talk and it's now up on the TED Conferences YouTube. It's possibly the best and most important talk I've ever done. I would ask that you watch it, and please SHARE it broadly and widely. Thank you! youtu.be/dVG8W-0p6vg #AI #Tech #TED

Today, this thought crossed my mind: Claude Code appears to be the current pinnacle of AI-supported software development. In the videos I've seen, considerable emphasis is placed on the importance of a detailed and precise specification. The better the spec, the better the outcome. #fsharp

Wrote up some notes on that recent paper from METR "Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity" simonwillison.net/2025/Jul/12/...

It‘s this time of year again when I get reminded that I know (and follow) quite a lot of MS MVPs 😄 Congratulations to all of you.