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 Cognitehttps://bsky.app/profile/dbrattli.bsky.socialhttps://bsky.app/profile/dbrattli.bsky.social/post/3mhizjwrh3226Next week I will present the new work on Fable Beam at Oslo F# Meetup 💫 #fsharp #fablecompiler [contains quote post or other embedded content]20 Mar 2026 17:18 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mhizjwrh3226https://bsky.app/profile/dbrattli.bsky.social/post/3mgv7kgmxpk24The start of a cross-platform Actor library for F# / Fable ✨ Works on .NET, Python, JS and ... BEAM. Single process except BEAM where you get multi-process and supervision. Same code runs everywhere 🤩 #fablecompiler #fsharp https://github.com/dbrattli/Fable.Actor12 Mar 2026 20:12 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mgv7kgmxpk24https://bsky.app/profile/dbrattli.bsky.social/post/3mg6jstiy2k2iFinally received this book today 🥰 Fable.Python made me a Python expert. Looking forwards to the Fable.Beam journey ✨03 Mar 2026 19:45 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mg6jstiy2k2ihttps://bsky.app/profile/dbrattli.bsky.social/post/3mfhhhzaf2s2hRemember to complete your 2026 open source training. The training is mandatory for everyone who uses open source software https://gist.github.com/richhickey/1563cddea1002958f96e7ba9519972d922 Feb 2026 15:32 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mfhhhzaf2s2hhttps://bsky.app/profile/dbrattli.bsky.social/post/3mffpccbnnc2rI need to double (and tripple) check this but it seems like Giraffe on Beam is faster than .NET. Is it too good to be true? 🙈 At least the Python perf looks to be true 😆 #fsharp #fablecompiler21 Feb 2026 22:46 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mffpccbnnc2rhttps://bsky.app/profile/dbrattli.bsky.social/post/3mfefbwn5dk2eTimeflies with F# on Fable Beam (Fable v5 teaser) #fsharp #fablecompiler #erlang21 Feb 2026 10:15 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mfefbwn5dk2ehttps://bsky.app/profile/dbrattli.bsky.social/post/3memco2dcpc2lPerhaps not too impressive for now but this shows Giraffe (F#) running on the BEAM (Erlang Runtime) using Fable (WIP) #fablecompiler #fsharp11 Feb 2026 20:24 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3memco2dcpc2lhttps://bsky.app/profile/dbrattli.bsky.social/post/3maj3pwmkz22vMy 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 https://cardamomcode.dev/fable-python#fsadvent21 Dec 2025 16:01 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3maj3pwmkz22vhttps://bsky.app/profile/dbrattli.bsky.social/post/3mad7mytjps2uThis is a great video on JSON serialization, DTOs and domain objects by @einarwh.bsky.social that I recommend to watching again (and again) https://www.youtube.com/watch?v=gWlLRRzPEcA19 Dec 2025 07:55 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mad7mytjps2u