Dag Brattli's Avatar

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

79 Followers  |  138 Following  |  36 Posts  |  Joined: 26.01.2025  |  1.5804

Latest posts by dbrattli.bsky.social on Bluesky

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F# Weekly #7, 2026 – .NET 11 Preview 1 & Rider 2026.1 EAP 3 Welcome to F# Weekly, A roundup of F# content from this past week: News Boosting F# Libraries with Automated Agentic AI with Don Syme F# debugging improvements in Rider 2026.1. EAP 3 Microsoft News…

F# Weekly #7, 2026 - .NET 11 Preview 1 & Rider 2026.1 EAP 3 #fsharp sergeytihon.com/2026/02/14/f...

14.02.2026 20:27 — 👍 12    🔁 4    💬 0    📌 0

Current status is that inital scaffolding in place. 1500 unit-tests passing. That probably took me 3+ years with Fable.Python. Claude Code used 3 days for Fable.Beam 🙈

12.02.2026 08:32 — 👍 1    🔁 0    💬 0    📌 0

I want to learn more about the BEAM and OTP and F# is the right tool for making an actor {...} expression ✨

12.02.2026 08:03 — 👍 1    🔁 0    💬 0    📌 0
Post image Post image

Perhaps not too impressive for now but this shows Giraffe (F#) running on the BEAM (Erlang Runtime) using Fable (WIP) #fablecompiler #fsharp

11.02.2026 20:24 — 👍 22    🔁 5    💬 4    📌 1
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F# Weekly #6, 2026 – FScript & An ode to “Slowly” handcrafted code Welcome to F# Weekly, A roundup of F# content from this past week: Microsoft News .NET Framework 3.5 Moves to Standalone Deployment in new versions of Windows – .NET Blog Build AI Agents with…

F# Weekly #6, 2026 - FScript & An ode to “Slowly” handcrafted code #fsharp sergeytihon.com/2026/02/07/f...

07.02.2026 17:59 — 👍 15    🔁 5    💬 1    📌 0
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F# Weekly #5, 2026 – Leveling Up With Lattice Welcome to F# Weekly, A roundup of F# content from this past week: News .NET AI Essentials – The Core Building Blocks Explained – .NET Blog Join Microsoft at NDC London 2026 – Let…

F# Weekly #5, 2026 - Leveling Up With Lattice #fsharp sergeytihon.com/2026/02/01/f...

01.02.2026 20:20 — 👍 18    🔁 6    💬 1    📌 0
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F# Weekly #3, 2026 – F# event / (un)conference in 2026? Welcome to F# Weekly, A roundup of F# content from this past week: News Bringing work context to your code in GitHub Copilot – Microsoft for Developers Context-Driven Development: Agent Skill…

F# Weekly #3, 2026 - F# event / (un)conference in 2026? #fsharp sergeytihon.com/2026/01/24/f...

24.01.2026 10:56 — 👍 16    🔁 6    💬 0    📌 0
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F# Weekly #2, 2026 – Mibo and WREN Stack Welcome to F# Weekly, A roundup of F# content from this past week: News Mibo: A Functional Game Framework for F# Generative AI: The Future of Consumer Technology – .NET Blog XAML Studio is no…

F# Weekly #2, 2026 - Mibo and WREN Stack #fsharp sergeytihon.com/2026/01/10/f...

10.01.2026 21:18 — 👍 11    🔁 4    💬 0    📌 0
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F# Weekly #1, 2026 – Kipo & future of MonoGame Welcome to F# Weekly, A roundup of F# content from this past week: News Top .NET Videos & Live Streams of 2025 – .NET Blog Top .NET Blog Posts of 2025 – .NET Blog Java at Microsoft:…

F# Weekly #1, 2026 - Kipo & future of MonoGame #fsharp sergeytihon.com/2026/01/03/f...

03.01.2026 21:36 — 👍 12    🔁 3    💬 0    📌 0

Try F# for a small project in 2026 #dev #programming #coding 🥳🥂✨💙

01.01.2026 21:09 — 👍 12    🔁 1    💬 0    📌 0
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F# Weekly #52, 2025 – Happy New Year Welcome to F# Weekly, A roundup of F# content from this past week: News F# Advent Calendar in English 2025 – Sergey Tihon’s Blog How AI fixed my procrastination – Visual Studio Blog Vid…

⚡️ F# Weekly #52: A Fresh Start for 2025

🏷️ #devdigest #dotnet #net #fp #fsharp

https://devdigest.today/goto/5234

28.12.2025 09:37 — 👍 2    🔁 1    💬 0    📌 0
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F# Advent Calendar in English 2025 🎄 It’s that magical time of year again! 🎅🏻Christmas is twinkling on the horizon, and that means one thing — it’s time for the 12th annual F# Advent in English! It’s incredible to think that our tra…

"F# Advent Calendar in English 2025" is complete and all slots are filled 🎉 #fsharp #fsadvent sergeytihon.com/2025/11/03/f...

27.12.2025 09:13 — 👍 21    🔁 10    💬 0    📌 0

Thank you for fixing ❤️ Looking forwards to try this out. Maybe I will switch to @zed.dev now 😅

22.12.2025 16:11 — 👍 0    🔁 0    💬 0    📌 0
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Incorrect link in symbol description · Issue #14 · nathanjcollins/zed-fsharp Related to every symbol.

There is an issue with FSAC? using inline HTML instead of Markdown for description links. Is this a hack for vscode/ionide? github.com/nathanjcolli...

22.12.2025 13:55 — 👍 0    🔁 0    💬 1    📌 0
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GitHub - cardamomcode/fable-python: Fable Python F# Advent Fable Python F# Advent. Contribute to cardamomcode/fable-python development by creating an account on GitHub.

Here is the repo. The blogpost was written 100% in F#, translated to Python. Please contribute to the docs if you find any issues by creating a PR. Should make Fable.Literate into a first class library also targeting JS, TypeScript and Rust? @mangelmaxime.bsky.social github.com/cardamomcode...

21.12.2025 18:21 — 👍 7    🔁 0    💬 1    📌 0
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Fable Python Introduction to Fable.Python This post is part of the F# Advent Calendar 2025. Thank you, Sergey Tihon, for organizing this wonderful tradition that brings the F# community together every year! Welcome to this guide on Fable and Fable.Python - a co...

My F# Advent Calendar post about Fable.Python (and ended up with Fable.Literate 🙈). Learn how you can use Pydantic, FastAPI with Fable 🐍🦔 cardamomcode.dev/fable-python #FsAdvent #fsharp #fablecompiler #python

21.12.2025 16:01 — 👍 36    🔁 8    💬 2    📌 0
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F# Weekly #51, 2025 – WebSharper 10 & Fidelity Framework Welcome to F# Weekly, A roundup of F# content from this past week: News WebSharper 10.0 Aspire 13.1 – Our holiday gift to you | Aspire Blog Microsoft.Testing.Platform Now Fully Supported in A…

F# Weekly #51, 2025 - WebSharper 10 & Fidelity Framework #fsharp sergeytihon.com/2025/12/20/f...

20.12.2025 19:54 — 👍 11    🔁 2    💬 1    📌 0
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Aligned Dev Blog Articles about software development from SD.

"F#, Microsoft Agent Framework, MCP and Bitcoin for the F# Advent Calendar 2025" by Kevin for #fsharp #fsadvent www.aligneddev.net/blog/2025/fs...

18.12.2025 14:19 — 👍 8    🔁 3    💬 0    📌 0
How I work with JSON - Einar Høst - NDC Oslo 2022
YouTube video by NDC Conferences How I work with JSON - Einar Høst - NDC Oslo 2022

This is a great video on JSON serialization, DTOs and domain objects by @einarwh.bsky.social that I recommend to watching again (and again) www.youtube.com/watch?v=gWlL...

19.12.2025 07:55 — 👍 2    🔁 1    💬 0    📌 0
Welcome file

"Interactive development in F#" by soweli-p for #fsharp #fsadvent soweli-p.github.io/repl-driven-...

18.12.2025 07:00 — 👍 5    🔁 2    💬 0    📌 1
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Fable.Python/examples/fastapi/App.fs at 79c4fe2c40d53bde6c62b5e0607f401be207d294 · fable-compiler/Fable.Python Python bindings for Fable. Contribute to fable-compiler/Fable.Python development by creating an account on GitHub.

WIP, but this looks kinda cool in F# github.com/fable-compil...

07.12.2025 16:17 — 👍 0    🔁 0    💬 1    📌 0

curl 127.0.0.1:8000
{"message":"Welcome to Fable.Python + FastAPI!","version":"1.0.0"} 😅 #fsharp #fablecompiler

07.12.2025 16:12 — 👍 8    🔁 2    💬 1    📌 0
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F# Weekly #49, 2025 – Oxpecker 2, fsi-mcp, LSP & AOC in F# Welcome to F# Weekly, A roundup of F# content from this past week: News .NET Conf 2025 Recap – Celebrating .NET 10, Visual Studio 2026, AI, Community, & More – .NET Blog Introducing…

F# Weekly #49, 2025 - Oxpecker 2, fsi-mcp, LSP & AOC in F# #fsharp sergeytihon.com/2025/12/06/f...

06.12.2025 19:48 — 👍 10    🔁 2    💬 0    📌 0
GitHub - nfdi4plants/ARCtrl: Polyglot (.NET/JS/Python) library for management of Annotated Research Contexts (ARCs) using an in-memory representation and runtime-agnostic contract systems. Polyglot (.NET/JS/Python) library for management of Annotated Research Contexts (ARCs) using an in-memory representation and runtime-agnostic contract systems. - nfdi4plants/ARCtrl

Proof that it works for real projects: github.com/nfdi4plants/...

06.12.2025 14:45 — 👍 1    🔁 1    💬 0    📌 0

Python `Optional` i.e `x | None` is like an erased `Option`, So Ok(x) -> x, Nothing -> None, and cannot handle nested options like Ok(None).

05.12.2025 20:00 — 👍 0    🔁 0    💬 0    📌 0
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Building 'Ask AI' How F#, Fable and CloudflareFS Bindings Enable AI Search with Ranked Sources on Cloudflare's Edge Platform

Our #fsharp Advent entry for this year.

speakez.tech/blog/buildin...

03.12.2025 11:24 — 👍 8    🔁 4    💬 1    📌 0

Python bindings for Fable (Fable.Python) v5.0.0-alpha.11 released on nuget. Repo modernized with fully automatic release, version and changelog handling using "release-please" #fsharp #fablecompiler github.com/fable-compil...

02.12.2025 23:35 — 👍 9    🔁 3    💬 0    📌 1
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Feliz.ViewEngine 1.0.2 Package Description

Version 1.0.2 of Feliz.ViewEngine also released on nuget: #fsharp www.nuget.org/packages/Fel...

02.12.2025 23:30 — 👍 5    🔁 0    💬 0    📌 0
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GitHub - dbrattli/Feliz.ViewEngine: Feliz DSL and engine for HTML generation and server side rendering (SSR) Feliz DSL and engine for HTML generation and server side rendering (SSR) - dbrattli/Feliz.ViewEngine

Feliz.ViewEngine repo modernized with fully automatic version and changelog updates, release management using `release-please` and `just` as command runner 🥰 #fsharp #fablecompiler github.com/dbrattli/Fel...

02.12.2025 23:20 — 👍 10    🔁 2    💬 1    📌 0
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F# Weekly #48, 2025 – #FsAdvent starts Dec 1st. Welcome to F# Weekly, A roundup of F# content from this past week: News Gazelle (A Fast Engine for Structural Engineering) is written in F# .NET Day on Agentic Modernization Coming Soon – .NE…

F# Weekly #48, 2025 - #FsAdvent starts Dec 1st. #fsharp sergeytihon.com/2025/11/30/f...

30.11.2025 12:13 — 👍 5    🔁 2    💬 1    📌 0

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