as so often, hobbes nails it … imo, his observation has become even more accurate today …

on type safety

I'm currently refactoring a lot of code in our mixed codebase of #fsharp and #csharp. One thing I appreciate about F# is that because there are only few type annotations, it's much easier to refactor F# code than C# code. Thinks about the code in the picture. #dotnet 1/2

Introducing F# 10 #fsharp devblogs.microsoft.com/dotnet/intro...

simple observation, often hard to implement: if you want to implement change in your organization, you must be willing to sacrifice the heroes of your current organization. (not always but) very often they are the preservers of the status quo because change threatens their hero status.

FSharp.SystemCommandLine v2.0 is released, following System.CommandLine out of beta! #fsharp github.com/JordanMarr/F...

Trying to measure coding productivity is, and always will be, a fool's errand. Why? Because I can go for a walk then take a shower and have an idea, then write a single line of code that fixes everything I was working on. Immense productivity, but by most metrics I didn't do anything at all.

F# 10 makes it possible to use let! .. and! to await two tasks in parallel. This brings back some memories!

F# is great for business applications because it makes getting data from a store asynchronously and in parallel combined with error handling ("hey, there is no data to that ID!") so easy. 1/4

@t-redactyl.bsky.social I watched your NDC keynote (AI is having its moment ... again) and I liked it a lot. I like the storyline, the humour, the information presented, and the style of presentation. Thanks a lot.

Have you had an uneasy feeling about the clear gap between how LLMs perform on benchmarks and their real-life capabilities? If you're curious about the messy truth behind current LLM assessment, catch my @ndcconferences.com AI keynote tomorrow at Rebel, Oslo. ndc-ai.com/agenda/can-y...

Did you notice that the "What's new in F# 10" page is longer than the "What's new in C# 14" page? #justTrolling #dotnet #fsharp #csharp learn.microsoft.com/en-us/dotnet... learn.microsoft.com/en-us/dotnet...

Good abstractions hide the irrelevant and simplify the essential. Bad abstractions hide the essential and complicate the irrelevant.

One thing I like about programming in F# is that sometimes, adding a new feature is more or less adding a single line in a pipeline: #fsharp

A super alternative to postman and http scripts , with a real programming language #fsharp 💚🦔 youtu.be/F508wQu7ET0?...

What happened to Compositional btw ? Also didn’t see many blog posts

When I tell that #pxlclock is hand-made, this means: Man, it's hand-made! I swear - for real ;) You see Sefa in Action - life and in color, soldering the 2 boards for the clock. Thank god I'm a programmer... get your PXL Clock: pxlclock.com

A programmable device for #csharp and #fsharp hobbyists? A beautiful hand-crafted piece of furniture? Or both? Order your #pxlclock now (1st batch limited to 100 units): www.pxlclock.com

Situation an hour ago: #eMTB

#pxlclock is finally here 🎉 Hand-built and crafted, with 576 glowing 3D pixels. Only 100 units available right now - made with care, not mass-produced. 👉 www.pxlclock.com PS: If you enjoy m#fsharprp open-source work: this is a beautiful way to support it ❤️

Hey #fsharp, what we do with #FsAdvent this year? sergeytihon.com/fsadvent/ Do we have 24 F#ers ready to participate?

F#+ 1.8.0 released ✨🥳 #fsharp www.nuget.org/packages/FSh... www.nuget.org/packages/FSh...

Improvements in #fsharp performance over time, big boost in speed with .NET 8 working with a sequence on a linked list: .NET10 -> 3.2us .NET9 -> 4.0us .NET8 -> 4.0us .NET6 -> 9.1us .NET Framework 4.81 -> 10.5us

Now that’s perfect

I submitted my abstracts, so hopefully, I'll be speaking at this event and, maybe, see you there.

Early Bird tickets for Voxxed Days Zürich 2026 are on sale 🎟️ 📅 24 March 2026 📍 Arena Cinemas Sihlcity, Zürich 💰 CHF 301.00 ⏰ Sales end 14 Dec 2025, 23:59 Don’t miss the 10th edition of Switzerland’s favourite developer conference! zurich.voxxeddays.ch #VDZ26 #Voxxed

Coming to Rider 2025.3: #ASPNETCore and Database Issue Detection in the Monitoring Tool Window buff.ly/XZh0rk2 #dotnet #rider #jetbrains #database #devtools #ide #csharp

Evergreen.

F# is the best enterprise programming language ever made, learn it and prove me wrong 😋🦔💕

Hey y’all wanna feel old

F# Weekly #42, 2025 - Hi, Victor & .NET 10 RC2 #fsharp sergeytihon.com/2025/10/18/f...

Strong, expressive types removes the need for many kinds of parameterized tests. Instead the compiler works as the test - if it doesn't conform to the definition, the code won't even compile. Reason #5 F# sucks: Your buggy code won't even compile hamy.xyz/blog/2025-06... #fsharp

Zug by night. Taken on my Thursday evening mountain bike ride. #eMTB

Nice Foto from Tonight‘s Mountain Bike tour #eMTB

Long files in F# don’t bother me. But I am always open to the idea of refactoring if it makes sense. One thing i hate in most C# codebases is having code split between so many files. F# makes it easier to have less files which I think is usually better.

Current situation. #eMTB

@kenbonny.net I'm watching your talk on F# and I guess I found a bug 😅 If drone is null then you should not use drone.Id in the error message. Let me know if you'd like my feedback on your talk. Go #fsharp!

If you read this far and think I must have lost my marbles, congratulations, that’s the right takeaway and precisely how many people perceive Trump’s rhetoric in response to America’s past, especially as it relates to how America treated its indigenous population and the civil war.

Current situation:

📣 Germany's close to reversing its opposition to mass surveillance & private message scanning, & backing the Chat Control bill. This could end private comms-& Signal-in the EU. Time's short and they're counting on obscurity: please let German politicians know how horrifying their reversal would be.

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 😀