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/3ml2lv4c2bk2hAgree, and with Fable you don't need to leave the ecosystem behind. TypeScript, Python, BEAM, Rust, .NET #fablecompiler [contains quote post or other embedded content]04 May 2026 21:17 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3ml2lv4c2bk2hhttps://bsky.app/profile/dbrattli.bsky.social/post/3mjzfepw6ck2u✨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 [contains quote post or other embedded content]21 Apr 2026 16:23 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mjzfepw6ck2uhttps://bsky.app/profile/dbrattli.bsky.social/post/3mjum7dawr22rIf 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 - https://github.com/easybuild-org/EasyBuild.ShipIt - https://github.com/githubnext/agentics/blob/main/docs/repo-assist.md #fsharp #csharp #dotnet19 Apr 2026 18:42 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mjum7dawr22rhttps://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/3memco2dcpc2l