Dag Brattli
@dbrattli.bsky.social
Creator of Fable Python and Reactive Extensions for Python (RxPY). Made the IrDA subsystem in the Linux kernel back in the 90'. On a quest to bridge the worlds of F# and Python ❤️ Microsoft Alumni and currently works at Cognite
F# Weekly #31 — MCP C# SDK v2.0, Unit-Test Agent, and MSBuild Binlog in VS Code #fsharp sergeytihon.com/2026/08/01/f...
F# Weekly #31 — MCP C# SDK v2.0, Unit-Test Agent, and MSBuild Binlog in VS Code
Welcome to F# Weekly, A roundup of F# content from this past week: News What’s new in 2.0 | Elmish Land Microsoft News Announcing v2.0 of the official MCP C# SDK From generated code to truste…
sergeytihon.com
Recent progress on Fable.Giraffe. Runs on Python (uvcorn), BEAM (cowboy), and Node (express). Not a replacement for .NET, but when you need parts of your API on a different ecosystem. github.com/dbrattli/Fab... #fsharp #fablecompiler
GitHub - dbrattli/Fable.Giraffe: Giraffe for Fable (Python, BEAM, and Node)
Giraffe for Fable (Python, BEAM, and Node). Contribute to dbrattli/Fable.Giraffe development by creating an account on GitHub.
github.com
F# Weekly #30 — FsHttp.Studio & fable-lit-fullstack-template #fsharp sergeytihon.com/2026/07/25/f...
F# Weekly #30 — FsHttp.Studio & fable-lit-fullstack-template
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News Visual Studio Code 1.130 Announcing a New Visual Manifest Editor in the WinApp VS Code Extension – #ifdef Win…
sergeytihon.com
F# Weekly #29 — .NET 11 Preview 6 and Mibo 3.0 #fsharp sergeytihon.com/2026/07/19/f...
F# Weekly #29 — .NET 11 Preview 6 and Mibo 3.0
Welcome to F# Weekly, A roundup of F# content from this past week: News F# in .NET 11 Preview 6 – Release Notes Angel D. Munoz: Mibo 3.0.0 released — MonoGame 3.8.5 with Vulkan and DX12 suppo…
sergeytihon.com
🚀 Fable 5.7.0 is officially live! 🎉 This release brings massive performance upgrades under the hood for Python: - DU pattern matching: 6-10x speed up! 🏎️ - Sequences: 1.6x faster! #fsharp #fablecompiler
F# Weekly #28 — Mibo 2.0, Fable 5.7, and Cast Shadows in F# #fsharp sergeytihon.com/2026/07/12/f...
F# Weekly #28 — Mibo 2.0, Fable 5.7, and Cast Shadows in F#
Welcome to F# Weekly, A roundup of F# content from this past week: News SharpLsp – Open Source C# and F# Language Server for VS Code, Zed, and More Deslop — Live MCP + LSP duplicate-code serv…
sergeytihon.com
F# Weekly #27, 2026 — Fable 5.5, SkiaSharp 4 & Orleans.FSharp 3.0 #fsharp sergeytihon.com/2026/07/05/f...
F# Weekly #27, 2026 — Fable 5.5, SkiaSharp 4 & Orleans.FSharp 3.0
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News .NET 8 and .NET 9 will reach End of Support on November 10, 2026 MCP Beyond the Chat Window: Build Diagnostics in C…
sergeytihon.com
Fable v5.5 is out 🥰🎉 Ro! Ro! Ro! 🚣🏼♀️🚣🏼♀️🚣🏼♀️ github.com/fable-compil... #fsharp #fablecompiler
Release 5.5.0 · fable-compiler/Fable
🚀 Features (all) Add Compiler.is* target detection flags for conditional branching (#4692) (621dea31) (js/ts) Map task { } to Promise (97f54d36) (js/ts/python/beam) Add support for Async.AwaitEven...
github.com
F# Fable 5 + GitHub hosting! A few retro-spirit items: - Combination counting, how I learned to calculate as a kid: thorium.github.io/Kasino/ - My 28-year-old 5-in-a-row ported: thorium.github.io/thomoku/ - Cave-rocket clone: thorium.github.io/FsRocket/ - Ice hockey: thorium.github.io/FsHockey/
F# Weekly #26, 2026 — Fable REPL on BEAM & WebSharper 10.1 #fsharp sergeytihon.com/2026/06/27/f...
F# Weekly #26, 2026 — Fable REPL on BEAM & WebSharper 10.1
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News AI-Powered MSBuild Investigation with the Microsoft Binlog MCP Server – .NET Blog Azure Functions MCP Extensi…
sergeytihon.com
F# Weekly #25, 2026 — Expecto 11.1 & Fable 5.3 #fsharp sergeytihon.com/2026/06/20/f...
F# Weekly #25, 2026 — Expecto 11.1 & Fable 5.3
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News AI-Powered MSBuild Investigation with the Microsoft Binlog MCP Server .NET at Microsoft Build 2026: Must Watch Sess…
sergeytihon.com
The AI era belongs to ML-family languages. And the good patterns already exist in the training data: actor models, algebraic data types, supervision trees, compilers that refuse to let bad code exist. Solved decades ago, ... then drowned in noise. fsharp.org #fsharp
fsharp.org
fsharp.org
The Fable Repl has been updated to include BEAM, and now compiles F# code to Erlang 🥰 fable.io/repl/ #fsharp #fablecompiler
Fable REPL
fable.io
F# Weekly #24, 2026 — Fable 5.2, Expecto 11 & .NET 11 Preview 5 #fsharp sergeytihon.com/2026/06/13/f...
F# Weekly #24, 2026 — Fable 5.2, Expecto 11 & .NET 11 Preview 5
Welcome to F# Weekly, A roundup of F# content from this past week: News Fable 5.1 and 5.2 Rider 2026.2 EAP 5 Microsoft News .NET 11 Preview 5 is now available! – .NET Blog .NET at Microsoft B…
sergeytihon.com
What's better than Fable 5? Fable 5.1 and 5.2! 🎉 (And yes, I totally forgot to announce 5.1). Both releases bring plenty of fixes across various targets. Check out the release notes for details: github.com/fable-compil... #fsharp #fablecompiler
Releases · fable-compiler/Fable
F# to JavaScript, TypeScript, Python, Rust, Erlang and Dart Compiler - fable-compiler/Fable
github.com
F# Weekly #23, 2026 – Wolverine/Marten F# Improvements #fsharp sergeytihon.com/2026/06/06/f...
F# Weekly #23, 2026 – Wolverine/Marten F# Improvements
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News Visual Studio Code 1.123 What’s Coming Next in Visual Studio: Our Microsoft Build 2026 Announcements – …
sergeytihon.com
F# Weekly #22, 2026 - Fable 5.1 & Mibo.Raylib 1.0 #fsharp sergeytihon.com/2026/05/31/f...
F# Weekly #22, 2026 – Fable 5.1 & Mibo.Raylib 1.0
Welcome to F# Weekly, A roundup of F# content from this past week: News Angel Munoz: Mibo.Raylib 1.0.0 is Out – F# micro framework for code-first Raylib games Loïc Denuzière: Domain Modeling Made F…
sergeytihon.com
Fable v5.1.0 is out 🎉Several bugfixes for most targets, and a few new features as well github.com/fable-compil... #fsharp #fablecompiler
Release 5.1.0 · fable-compiler/Fable
🚀 Features (js/ts/python) Add missing standard DateTime format specifiers for JS/TS and Python (#4547) (90f5eb7) (js/ts/python) Add missing StringBuilder.Append overloads for numeric types (#4568)...
github.com
F# Weekly #21, 2026 - Scriptorium, Elmish Land 2.0 Preview & RProvider 3.0 #fsharp sergeytihon.com/2026/05/23/f...
F# Weekly #21, 2026 – Scriptorium, Elmish Land 2.0 Preview & RProvider 3.0
Welcome to F# Weekly, A roundup of F# content from this past week: News Scriptorium – A family of focused F# libraries for building and testing F#/Fable applications. Announcing Elmish Land 2…
sergeytihon.com
F# Weekly #20, 2026 - .NET 11 Preview 4 and SwaggerProvider 4.0 #fsharp sergeytihon.com/2026/05/16/f...
F# Weekly #20, 2026 – .NET 11 Preview 4 and SwaggerProvider 4.0
Welcome to F# Weekly, A roundup of F# content from this past week: News [System.Text.Json] now understands F# discriminated unions out of the box SwaggerProvider v4.0.0 Microsoft News .NET 11 Previ…
sergeytihon.com
F# Weekly #19, 2026 - Understanding Compilers Through an Algebraic Expression Compiler #fsharp sergeytihon.com/2026/05/09/f...
F# Weekly #19, 2026 – Understanding Compilers Through an Algebraic Expression Compiler
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News Copilot Studio gets faster with .NET 10 on WebAssembly Durable Workflows in the Microsoft Agent Framework Microsoft…
sergeytihon.com
Agree, and with Fable you don't need to leave the ecosystem behind. TypeScript, Python, BEAM, Rust, .NET #fablecompiler
@halcwb.bsky.social · 3mo agoThere you go: #fsharp adabeat.com/fp/ai-f-fast...
F# Weekly #18, 2026 - Game Boy Emulator in F# #fsharp sergeytihon.com/2026/05/03/f...
F# Weekly #18, 2026 – Game Boy Emulator in F#
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News Welcome to SkiaSharp 4.0 Preview 1 Building an AI-Powered Conference App with .NET’s Composable AI Stack Gove…
sergeytihon.com
F# Weekly #17, 2026 - Fable 5.0 #fsharp sergeytihon.com/2026/04/25/f...
F# Weekly #17, 2026 – Fable 5.0
Welcome to F# Weekly, A roundup of F# content from this past week: News Fable 5 has been released Microsoft News .NET 10.0.7 Out-of-Band Security Update What’s new for .NET in Ubuntu 26.04 Wr…
sergeytihon.com
EasyBuild.ShipIt 2.2.0 has been released. This version add a new `--dry-run` flag allowing you to preview the changes that will be made. It is pretty handy when setting up a new repo to check that everything is working correctly. #fsharp
✨Fable v5 ✨ Such great news today ❤️ In addition to JS/TS, Rust, and Dart, the Python target has been significantly improved, and there is also the exciting new BEAM target added to the list. Write once run everywhere 🥰 #fsharp #fablecompiler
Maxime@mangelmaxime.bsky.social · 4mo agoFable 5 has been released 🎉 This is the result of almost 1 year and a half of work from the community and the maintainers. Huge thank you to everyone involved. ❤️ #fsharp #fablecompiler
If you maintain open source projects, these two tools have been game-changers for me recently: - EasyBuild.ShipIt by @mangelmaxime.bsky.social - Repo Assist by @dsyme.bsky.social - github.com/easybuild-or... - github.com/githubnext/a... #fsharp #csharp #dotnet
F# Weekly #16, 2026 - .NET 11 Preview 3 & SwaggerProvider 4.0 beta #fsharp sergeytihon.com/2026/04/19/f...
F# Weekly #16, 2026 – .NET 11 Preview 3 & SwaggerProvider 4.0 beta
Welcome to F# Weekly, A roundup of F# content from this past week: News .NET 11 Preview 3 is now available! TypeFighter Replace Queue with mutable doubly-linked EventList by nojaf · Pull Request #3…
sergeytihon.com
F# Weekly #15, 2026 - Akkling, FSharp.Data and RANSAC auto-tune #fsharp sergeytihon.com/2026/04/11/f...
F# Weekly #15, 2026 – Akkling, FSharp.Data and RANSAC auto-tune
Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News Your Migration’s Source of Truth: The Modernization Assessment – .NET Blog ASP.NET Core 2.3 end of supp…
sergeytihon.com
F# Weekly #14, 2026 - Serde.FS Brings Compile-Time RPC to F# #fsharp sergeytihon.com/2026/04/05/f...
F# Weekly #14, 2026 – Serde.FS Brings Compile-Time RPC to F#
Welcome to F# Weekly, A roundup of F# content from this past week: News Serde.FS alpha.9 — Compile-time RPC for F# with no reflection, no controllers Florian Verdonck: Fantomas — exploring new appr…
sergeytihon.com