Alf Kåre Lefdal
@aklefdal.bsky.social
Norwegian developer living in the suburbs of Oslo. DDD, .NET, F# and C#, Azure, socio-technical organisation. Partner and senior consultant at Aurum AS
Reposted by Alf Kåre Lefdal
Reposted by Alf Kåre Lefdal
“November always seemed to me the Norway of the year.”
—Emily Dickinson
—Emily Dickinson
November 1, 2025 at 3:49 PM
“November always seemed to me the Norway of the year.”
—Emily Dickinson
—Emily Dickinson
Reposted by Alf Kåre Lefdal
Trump Defends Demolition Of Yggdrasil, Ancient Tree Of Life
Trump Defends Demolition Of Yggdrasil, Ancient Tree Of Life
WASHINGTON—Claiming that the sacred ash tree had outlived its usefulness and needed to be updated, President Donald Trump made remarks Monday defending his demolition of Yggdrasil, the ancient tree of...
theonion.com
November 1, 2025 at 6:00 PM
Trump Defends Demolition Of Yggdrasil, Ancient Tree Of Life
Reposted by Alf Kåre Lefdal
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
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
7 Reasons F# Sucks
Date: 2025-06-18 | build | create | csharp | fsharp | tech |
hamy.xyz
October 18, 2025 at 4:54 PM
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
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
Reposted by Alf Kåre Lefdal
You do not need an ORM! This November I'll be at @codebeam.bsky.social to show how sticking to SQL can be great fun and have a stellar developer experience ⭐️
codebeameurope.com
codebeameurope.com
Code BEAM Europe 2025 - 5-6 NOV Berlin & Online
The Erlang and Elixir conference in Europe - 2 days of talks,discussions and networking for the BEAM community.
codebeameurope.com
October 27, 2025 at 1:15 PM
You do not need an ORM! This November I'll be at @codebeam.bsky.social to show how sticking to SQL can be great fun and have a stellar developer experience ⭐️
codebeameurope.com
codebeameurope.com
Reposted by Alf Kåre Lefdal
“Leaders not Tweeters” is the rebrand America needs.
October 28, 2025 at 2:06 PM
“Leaders not Tweeters” is the rebrand America needs.
Reposted by Alf Kåre Lefdal
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. - Brian Kernighan
October 27, 2025 at 3:42 PM
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. - Brian Kernighan
Reposted by Alf Kåre Lefdal
I 2005 regnet de med at Ensjøveien og Gladengveien ville ha 15 000 kjøretøy i døgnet da utbyggingen var ferdig. I dag er trafikken 5-6000 biler i døgnet. Omtrent en tredjedel.
October 12, 2025 at 3:11 PM
I 2005 regnet de med at Ensjøveien og Gladengveien ville ha 15 000 kjøretøy i døgnet da utbyggingen var ferdig. I dag er trafikken 5-6000 biler i døgnet. Omtrent en tredjedel.
Reposted by Alf Kåre Lefdal
If you're an ADHDer, or live or work with one, you may find this of interest: "People with ADHD may have an underappreciated advantage: Hypercuriosity"
www.sciencenews.org/article/adhd...
www.sciencenews.org/article/adhd...
People with ADHD may have an underappreciated advantage: Hypercuriosity
ADHD is officially a disorder of deficits in attention, behavior and focus. But patients point out upsides, like curiosity. Research is now catching up.
www.sciencenews.org
September 27, 2025 at 11:47 AM
If you're an ADHDer, or live or work with one, you may find this of interest: "People with ADHD may have an underappreciated advantage: Hypercuriosity"
www.sciencenews.org/article/adhd...
www.sciencenews.org/article/adhd...
Reposted by Alf Kåre Lefdal
Zeedijk, Amsterdam in 1980 and today.
October 10, 2025 at 4:30 PM
Zeedijk, Amsterdam in 1980 and today.
Reposted by Alf Kåre Lefdal
The mystery of medical diagnosis!
October 3, 2025 at 6:25 PM
The mystery of medical diagnosis!
Reposted by Alf Kåre Lefdal
History repeats.
October 4, 2025 at 6:54 AM
History repeats.
Reposted by Alf Kåre Lefdal
Pocket debugger...
September 19, 2025 at 12:38 PM
Pocket debugger...
Reposted by Alf Kåre Lefdal
“Look Ma’ no hands!”
It’s interesting how much audience (in our industry) are getting people showing that’s the best/only way to ride a bicycle.
For some it is, but they usually have big red noses.
For other trying to follow that advice, the next step is tho
„Look Ma’ no teeth!”
🤷♂️
It’s interesting how much audience (in our industry) are getting people showing that’s the best/only way to ride a bicycle.
For some it is, but they usually have big red noses.
For other trying to follow that advice, the next step is tho
„Look Ma’ no teeth!”
🤷♂️
September 18, 2025 at 10:03 AM
“Look Ma’ no hands!”
It’s interesting how much audience (in our industry) are getting people showing that’s the best/only way to ride a bicycle.
For some it is, but they usually have big red noses.
For other trying to follow that advice, the next step is tho
„Look Ma’ no teeth!”
🤷♂️
It’s interesting how much audience (in our industry) are getting people showing that’s the best/only way to ride a bicycle.
For some it is, but they usually have big red noses.
For other trying to follow that advice, the next step is tho
„Look Ma’ no teeth!”
🤷♂️
Reposted by Alf Kåre Lefdal
.NET STS releases are now supported for 2 years instead of 18 months starting with .NET 9 (the current STS). STS releases now go out-of-support on the same day as the previous LTS release. Upgrading to an STS release will no longer cause you to lose support!
devblogs.microsoft.com/dotnet/dotne...
devblogs.microsoft.com/dotnet/dotne...
.NET STS releases supported for 24 months - .NET Blog
.NET STS releases will be supported for 24 months
devblogs.microsoft.com
September 16, 2025 at 5:56 PM
.NET STS releases are now supported for 2 years instead of 18 months starting with .NET 9 (the current STS). STS releases now go out-of-support on the same day as the previous LTS release. Upgrading to an STS release will no longer cause you to lose support!
devblogs.microsoft.com/dotnet/dotne...
devblogs.microsoft.com/dotnet/dotne...
Dette er sykling! Effektiv transport i by.
Think cycling in the Netherlands is only big-city stuff? Take a look at Zutphen. In this small historic town, young and old, of every background, move around by bike — and in big numbers.
www.youtube.com/shorts/6uEAd...
www.youtube.com/shorts/6uEAd...
Zutphen rides a bike
YouTube video by BicycleDutch
www.youtube.com
September 10, 2025 at 11:35 AM
Dette er sykling! Effektiv transport i by.
Reposted by Alf Kåre Lefdal
Yes, it’s a BMW. What else would it be?
#WorldBollardAssociation 🤭
#WorldBollardAssociation 🤭
September 1, 2025 at 7:04 PM
Yes, it’s a BMW. What else would it be?
#WorldBollardAssociation 🤭
#WorldBollardAssociation 🤭
Reposted by Alf Kåre Lefdal
“Blind obedience to authority is the greatest enemy of truth.”
— Albert Einstein (1879–1955)
— Albert Einstein (1879–1955)
August 30, 2025 at 2:03 PM
“Blind obedience to authority is the greatest enemy of truth.”
— Albert Einstein (1879–1955)
— Albert Einstein (1879–1955)
Reposted by Alf Kåre Lefdal
In which Don burns $200 to improve test coverage and improve performance in an F# community library.
#fsharp
github.com/fsprojects/F...
#fsharp
github.com/fsprojects/F...
Automated test coverage and perf experiment · Issue #179 · fsprojects/FSharp.Control.AsyncSeq
In my work at GitHub Next we are looking at partially automated test coverage and perf improvement for repository maintainers. The aim is to have AI help improve the quality of software. I will be ...
github.com
August 29, 2025 at 8:05 PM
In which Don burns $200 to improve test coverage and improve performance in an F# community library.
#fsharp
github.com/fsprojects/F...
#fsharp
github.com/fsprojects/F...
This is fantastic performance improvements using AI agent technology.
In which Don burns $200 to improve test coverage and improve performance in an F# community library.
#fsharp
github.com/fsprojects/F...
#fsharp
github.com/fsprojects/F...
Automated test coverage and perf experiment · Issue #179 · fsprojects/FSharp.Control.AsyncSeq
In my work at GitHub Next we are looking at partially automated test coverage and perf improvement for repository maintainers. The aim is to have AI help improve the quality of software. I will be ...
github.com
August 29, 2025 at 9:08 PM
This is fantastic performance improvements using AI agent technology.
Reposted by Alf Kåre Lefdal
OMFG @madskristensen.net I'M INSTALLING THIS ASAP
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
Keyboard Hero - Visual Studio Marketplace
Extension for Visual Studio - Shows you what keyboard shortcuts you would benefit the most from learning based on your usage of Visual Studio
marketplace.visualstudio.com
August 28, 2025 at 2:09 AM
OMFG @madskristensen.net I'M INSTALLING THIS ASAP
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
(now if only @rocky.lhotka.net would use the keyboard shortcuts...)
marketplace.visualstudio.com/items?itemNa...
Reposted by Alf Kåre Lefdal
Those Reform nutjobs reminded me:
"Being British is about driving in a German car to an Irish pub for a Belgian beer, grabbing an Indian curry or Turkish kebab takeaway, then going home to sit on Swedish furniture & watch American shows on a Japanese TV, while being suspicious of anything foreign."
"Being British is about driving in a German car to an Irish pub for a Belgian beer, grabbing an Indian curry or Turkish kebab takeaway, then going home to sit on Swedish furniture & watch American shows on a Japanese TV, while being suspicious of anything foreign."
August 27, 2025 at 9:12 AM
Those Reform nutjobs reminded me:
"Being British is about driving in a German car to an Irish pub for a Belgian beer, grabbing an Indian curry or Turkish kebab takeaway, then going home to sit on Swedish furniture & watch American shows on a Japanese TV, while being suspicious of anything foreign."
"Being British is about driving in a German car to an Irish pub for a Belgian beer, grabbing an Indian curry or Turkish kebab takeaway, then going home to sit on Swedish furniture & watch American shows on a Japanese TV, while being suspicious of anything foreign."
Reposted by Alf Kåre Lefdal
Problemet med ukritisk motorveibygging er at det er ulønnsomt langt utenfor byen (fordi der er trafikken for lav). Og ulønnsomt i nærheten av by, fordi der fortrenger den tett bystruktur og andre mer arealeffektive reisemåter. Mer bilmobilitet i nærhet av by er ikke lønnsomt for samfunnet.
August 27, 2025 at 7:42 AM
Problemet med ukritisk motorveibygging er at det er ulønnsomt langt utenfor byen (fordi der er trafikken for lav). Og ulønnsomt i nærheten av by, fordi der fortrenger den tett bystruktur og andre mer arealeffektive reisemåter. Mer bilmobilitet i nærhet av by er ikke lønnsomt for samfunnet.
Reposted by Alf Kåre Lefdal
