Mattias Karlsson
@devlead.se
Partner & Technical fellow at WCOM AB
DevOps and Developer Tools Microsoft MVP.
Been coding since the ’80s (C128 & Amiga).
Father of 2, husband of 1.
Occasionally blogs at https://devlead.se
DevOps and Developer Tools Microsoft MVP.
Been coding since the ’80s (C128 & Amiga).
Father of 2, husband of 1.
Occasionally blogs at https://devlead.se
Reposted by Mattias Karlsson
Take a look at this super-cool terminal shader made by @rangemarten.bsky.social using Spectre.Tui! 😍
December 30, 2025 at 10:05 AM
Take a look at this super-cool terminal shader made by @rangemarten.bsky.social using Spectre.Tui! 😍
Reposted by Mattias Karlsson
December 29, 2025 at 9:57 PM
Reposted by Mattias Karlsson
The great @philco.bsky.social has added AOT support for Spectre.Console.Cli, and we've started a discussion on our Discord for anyone interested in trying it out and/or has feedback about the implementation: discord.com/channels/142...
Discord - Group Chat That’s All Fun & Games
Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.
discord.com
December 29, 2025 at 5:36 PM
The great @philco.bsky.social has added AOT support for Spectre.Console.Cli, and we've started a discussion on our Discord for anyone interested in trying it out and/or has feedback about the implementation: discord.com/channels/142...
Reposted by Mattias Karlsson
More path tracing:
December 29, 2025 at 10:41 AM
More path tracing:
Not everyday you can take a picture of your breath ❄️
December 27, 2025 at 7:21 AM
Not everyday you can take a picture of your breath ❄️
Reposted by Mattias Karlsson
My last contribution to "So you think you can code" is a blog post about writing COM programs for DOS in assembler in 2025: github.com/MagnusThor/s...
so-you-think-you-can-code-2025/day23 at main · MagnusThor/so-you-think-you-can-code-2025
🎄 So You Think You Can Code? 2025! Advent Calendar for geeks: from Shaders & Robotics to Web apps, Rust tricks & Retro code. Submit your best! - MagnusThor/so-you-think-you-can-code-2025
github.com
December 24, 2025 at 7:22 PM
My last contribution to "So you think you can code" is a blog post about writing COM programs for DOS in assembler in 2025: github.com/MagnusThor/s...
Reposted by Mattias Karlsson
The new Spectre.Console (and Spectre.Console.Cli) website is now live! 🎉
This is all courtesy of @philco.bsky.social, who has done an amazing job, just as he did with the previous website.
spectreconsole.net
This is all courtesy of @philco.bsky.social, who has done an amazing job, just as he did with the previous website.
spectreconsole.net
Spectre.Console Documentation
Documentation for Spectre.Console and Spectre.CLI - rich console UI library and command-line application framework for .NET
spectreconsole.net
December 24, 2025 at 6:43 PM
The new Spectre.Console (and Spectre.Console.Cli) website is now live! 🎉
This is all courtesy of @philco.bsky.social, who has done an amazing job, just as he did with the previous website.
spectreconsole.net
This is all courtesy of @philco.bsky.social, who has done an amazing job, just as he did with the previous website.
spectreconsole.net
Reposted by Mattias Karlsson
New reference article detailing lots of info about running C# file-based apps via `dotnet run` now available! Makes for great input to a coding agent when working on file-based apps.
learn.microsoft.com/dotnet/core/...
learn.microsoft.com/dotnet/core/...
File-based apps - .NET
Learn how to create, build, and run C# applications from a single file without a project file.
learn.microsoft.com
December 19, 2025 at 9:27 PM
Reposted by Mattias Karlsson
The recording of my @cakebuild.net SDK talk from @oredev.org is now published and available
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
Mattias Karlsson - GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by Øredev Conference
youtu.be
December 15, 2025 at 3:53 PM
The recording of my @cakebuild.net SDK talk from @oredev.org is now published and available
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
New reference article detailing lots of info about running C# file-based apps via `dotnet run` now available! Makes for great input to a coding agent when working on file-based apps.
learn.microsoft.com/dotnet/core/...
learn.microsoft.com/dotnet/core/...
File-based apps - .NET
Learn how to create, build, and run C# applications from a single file without a project file.
learn.microsoft.com
December 19, 2025 at 9:27 PM
Reposted by Mattias Karlsson
The spec might be wrong, but reality is never out-of-date...
December 17, 2025 at 1:57 PM
The spec might be wrong, but reality is never out-of-date...
A life lesson that’s saved me a lot of pain: don’t parse data you don’t use. 💡
December 17, 2025 at 5:39 PM
A life lesson that’s saved me a lot of pain: don’t parse data you don’t use. 💡
The spec might be wrong, but reality is never out-of-date...
December 17, 2025 at 1:57 PM
The spec might be wrong, but reality is never out-of-date...
Reposted by Mattias Karlsson
No. 2: The WinFS Song
December 16, 2025 at 3:02 PM
No. 2: The WinFS Song
Reposted by Mattias Karlsson
The Longhorn Holiday Songs 2003, No. 1: The Avalon Song, Don Box + Chris Anderson
December 16, 2025 at 1:35 PM
The Longhorn Holiday Songs 2003, No. 1: The Avalon Song, Don Box + Chris Anderson
Reposted by Mattias Karlsson
Borrowed with love from Mastodon:
December 16, 2025 at 12:04 PM
Borrowed with love from Mastodon:
The recording of my @cakebuild.net SDK talk from @oredev.org is now published and available
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
Mattias Karlsson - GitHub Actions DevOps Pipelines as Code using C# and Cake SDK
YouTube video by Øredev Conference
youtu.be
December 15, 2025 at 3:53 PM
The recording of my @cakebuild.net SDK talk from @oredev.org is now published and available
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
youtu.be/WzQ_goL6H4Y?...
#dotnet #devops #csharp
Reposted by Mattias Karlsson
Another path tracer attempt
www.shadertoy.com/view/wc3BD8
www.shadertoy.com/view/wc3BD8
December 14, 2025 at 7:16 PM
Another path tracer attempt
www.shadertoy.com/view/wc3BD8
www.shadertoy.com/view/wc3BD8
Reposted by Mattias Karlsson
I’ve written my second blog post for the "So You Think You Can Code?" Advent blog series.
github.com/MagnusThor/s...
github.com/MagnusThor/s...
December 13, 2025 at 11:45 AM
I’ve written my second blog post for the "So You Think You Can Code?" Advent blog series.
github.com/MagnusThor/s...
github.com/MagnusThor/s...
Reposted by Mattias Karlsson
.NET Rocks! - Package Management in 2026 with Gary Ewan Park and hosts Carl Franklin & Richard Campbell
buff.ly/TY0gvGN
#podcasts #dotnet #devcommunity #trends #developers #windowsdev
buff.ly/TY0gvGN
#podcasts #dotnet #devcommunity #trends #developers #windowsdev
Package Management in 2026 with Gary Ewan Park
How is package management changing? Carl and Richard talk with Gary Ewan Park about his view of the package management landscape in the Windows world. Gary talk
buff.ly
December 11, 2025 at 5:03 PM
.NET Rocks! - Package Management in 2026 with Gary Ewan Park and hosts Carl Franklin & Richard Campbell
buff.ly/TY0gvGN
#podcasts #dotnet #devcommunity #trends #developers #windowsdev
buff.ly/TY0gvGN
#podcasts #dotnet #devcommunity #trends #developers #windowsdev
Reposted by Mattias Karlsson
How is package management evolving in the .NET world?
@gep13.co.uk talks on .NET Rocks at www.dotnetrocks.com/details/1980 about his work on Chocolatey and the host of other products in the space, including open source, free and paid options!
@gep13.co.uk talks on .NET Rocks at www.dotnetrocks.com/details/1980 about his work on Chocolatey and the host of other products in the space, including open source, free and paid options!
.NET Rocks!
.NET Rocks! is a weekly talk show for anyone interested in programming on the Microsoft .NET platform. The shows range from introductory information to hardcore geekiness.
www.dotnetrocks.com
December 11, 2025 at 4:02 PM
How is package management evolving in the .NET world?
@gep13.co.uk talks on .NET Rocks at www.dotnetrocks.com/details/1980 about his work on Chocolatey and the host of other products in the space, including open source, free and paid options!
@gep13.co.uk talks on .NET Rocks at www.dotnetrocks.com/details/1980 about his work on Chocolatey and the host of other products in the space, including open source, free and paid options!
Reposted by Mattias Karlsson
As announced by Tom Gallagher, VP of Engineering, MSRC, on stage at Black Hat EU, we’re evolving our bug bounty program. Now, high-severity vulnerabilities that directly impact Microsoft online services are eligible for bounty awards, whether the code is Microsoft-owned, third-party, or open source.
December 11, 2025 at 12:46 PM
As announced by Tom Gallagher, VP of Engineering, MSRC, on stage at Black Hat EU, we’re evolving our bug bounty program. Now, high-severity vulnerabilities that directly impact Microsoft online services are eligible for bounty awards, whether the code is Microsoft-owned, third-party, or open source.
Working with AI...it was super confident one sentence earlier🤣
December 11, 2025 at 10:38 AM
Working with AI...it was super confident one sentence earlier🤣
Reposted by Mattias Karlsson
Maintaining an #oss project is like getting a kitten: at first, you give it all your attention, all the time…then you learn to balance things so you both stay sane. Sometimes you get tired of the cat, and it gets to move to a farm upstate.
But huge 🤎 to long-term maintainers like @daniel.haxx.se
But huge 🤎 to long-term maintainers like @daniel.haxx.se
December 11, 2025 at 9:41 AM
Maintaining an #oss project is like getting a kitten: at first, you give it all your attention, all the time…then you learn to balance things so you both stay sane. Sometimes you get tired of the cat, and it gets to move to a farm upstate.
But huge 🤎 to long-term maintainers like @daniel.haxx.se
But huge 🤎 to long-term maintainers like @daniel.haxx.se