Sergey Tihon's Blog

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• What’s new in F# 10 – F# Guide – .NET | Microsoft Learn
• What’s new in C# 14 | Microsoft Learn
• Announcing .NET 10 – .NET Blog
• What’s New in Rider
• OpenAPI.NET: The Biggest Update Ever – OpenAPI at Microsoft
• Aspire 13 – Aspireify anything | Aspire Blog
• Visual Studio 2026 is here: faster, smarter, and a hit with early adopters – Visual Studio Blog
• A first look at the all‑new UX in Visual Studio 2026 – Visual Studio Blog
• How Copilot Studio uses .NET and WebAssembly for performance and innovation – .NET Blog
• Introducing Copilot auto model selection (preview) – Visual Studio Blog
• Azure MCP Server Now Built-In with Visual Studio 2026: A New Era for Agentic Workflows – Visual Studio Blog
• Roadmap for AI in Visual Studio (November) – Visual Studio Blog

F# Advent Calendar in English 2025 #fsharp #FsAdvent sergeytihon.com/2025/11/03/f…

— Sergey Tihon 🦔🦀 (@sergeytihon.com) 2025-11-03T21:26:49.016Z

.NET Conf 2025

• Matthew Watt Smatterings of F# – YouTube
• Welcome to .NET 10 & Visual Studio 2026! – YouTube
• What’s New in C# 14 – YouTube
• What’s New in ASP.NET Core – YouTube
• Performance Improvements in .NET 10 – YouTube
• What’s New in NuGet – YouTube
• What’s New in Containers for .NET 10 – YouTube
• Build better web apps with Blazor in .NET 10 – YouTube

Videos

• Functional Programming in F#: Fad or Fabulous? — Ken Bonny
• On .NET Live | Building Real-World AI Agents with Agent Framework
• .NET MAUI Community Standup – A Journey to 10 Years of Grial

Hey #fsharp! Ionide 7.29.0 / FsAutocomplete 0.81.0 is out and brings F# 10 and .NET 10 support! Give it a try and report issues when you find them!

— Jimmy Byrd (@theangrybyrd.bsky.social) 2025-11-13T15:21:27.108Z

Blogs

• MLIR Testing with Teeth – Houston Haynes
• Introducing Conclave – Houston Haynes
• F# Domain Model with Event Sourcing vs C# with Entity Framework | by Tony Lucca
• Easier reflection with [UnsafeAccessorType] in .NET 10 – Andrew Lock
• Duende Software – Identity and Access Management for .NET | Duende

F# vNext

• [Poll] Consider changing the default of fsharp_multiline_bracket_style · Issue #3200
• Allow defining covariant/contravariant type parameters for use in other .NET languages · Issue #1450

Dear #fsharp, we're asking again about a possible Fantomas default change: github.com/fsprojects/f…With 500+ downloads a day and only ~130 votes, we simply don’t have enough data yet. Absolute numbers matter before making such a decision.

— Florian Verdonck (@nojaf.com) 2025-11-13T09:08:46.676Z

Highlighted projects

• afxres/binary: Serialization library for C# and F#.
• DCPRevere/jade – F# Event Sourcing Library
• cmeeren/BatchIt: Call batched functions as normal function
• ninjarobot/FSharp.Text.Docker: Build dockerfiles and run docker commands from F#
• j-alexander/FSharp.Data.JsonPath: JsonPath for F# Data JsonValue
• CSBiology/DynamicObj: F# library supporting Dynamic Objects including inheritance in functional style
• G-Research/ShapeSifter: Type-safe datatype-generic programming for F#
• G-Research/HeterogeneousCollections: Type-safe heterogeneous collections for F#
• ionide/Fornax: Scriptable static site generator using type safe F# DSL to define page templates.
• mavnn/VisualInk: Writing visual novels using Ink from Inkle.
• Freymaurer/Fable.Multiverse: A template to get up and running as fast as possible with Fable and publishing to multiple languages.

New Releases

• Paket 10.0.0-alpha011
• Aardvark.Paket 10.0.0
• Giraffe 8.2.0
• FSharp.SystemCommandLine 2.0.0
• Felicity 0.24.4
• DbFlow 0.6.0
• ReactiveElmish 1.5.0
• ReactiveElmish.Avalonia 1.5.0
• fsdocs-tool 21.0.0
• FSharp.Formatting 21.0.0
• Numerics.NET.FSharp 10.0.0
• Mikodev.Binary.FSharp 5.10.0
• FSharp.Text.Docker 1.0.17
• FSharp.Data.JsonPath 1.1.3
• Farse 0.6.0
• BatchIt 1.2.1
• FDocument 0.1.0
• HeterogeneousCollections 1.1.2
• FsUnit.Light.NUnit 1.1.0
• DynamicObj 7.1.0
• ShapeSifter 1.1.19
• Pulsar.Client 3.13.0
• altcover 9.0.102
• Fornax.Core 0.16.0
• FSharpLint.Core 0.26.6
• Ionide.Analyzers 0.14.10
• FSharp.Compiler.Service 43.10.100
• Equinox.Templates 7.0.0

🌈 After 2 years of serious side-project hustle, we’ve built a limited batch of 100 PXL Clocks – premium programmable clock for developers and design lovers.Use code "fsharp" for a 50€ discount and bring light into your workspace.👉 pxlclock.com#fsharp #pxlclock #csharp #pixelart

— SchlenkR (@schlenkr.bsky.social) 2025-11-08T11:40:40.549Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• .NET Conf 2025 – November 11 ‐ 13 (.NET 10 & VS 2026)
• Join us at .NET Conf: Dive into the future of development with Visual Studio 2026 – Visual Studio Blog
• Introducing Custom Agents for .NET Developers: C# Expert & WinForms Expert – .NET Blog
• 💫 Welcome to Aspire: Your stack, streamlined | Aspire Blog
• Visual Studio 2022 17.14 October Update
• Announcing Azure MCP Server 1.0.0 Stable Release – A New Era for Agentic Workflows – Azure SDK Blog

Videos

• Demystifying the Enigma Machine – a Functional Journey – Isaac Abraham – NDC Copenhagen 2025 – YouTube
• .NET Liverpool Lightning Talks 2025 – YouTube
• On .NET Live | Building agentic systems with local-first SLMs

Blogs

• Announcing Elmish Land 1.1 Preview | Elmish Land
• An F# MCP Client Example – Kevin Logan
• Scala vs F# – Alexandru Nedelcu
• Coding games with a story – Michael Newton
• Achieving Safety In a Universally Contested Future – Houston Haynes

Highlighted projects

• CSBiology/DynamicObj: F# library supporting Dynamic Objects including inheritance in functional style
• nfdi4plants/Swate: Excel Add-In for annotation of experimental data and computational workflows.
• informedica/GenPRES: Enable Safe and Efficient medication prescription, preparation and administration

New Releases

• Farmer 1.9.25
• Oxpecker 1.5.0
• FsUnit.Light 1.1.0
• fake-cli 6.1.4
• FSharpPlus 1.8.0
• Akka.FSharp 1.5.55
• FSharp.Idioms 1.5.3
• Fsharp.wpf 0.3.0
• DynamicObj 7.1.0
• Swate.Components 1.0.2
• ARCtrl 3.0.0-beta.11
• Feliz 3.0.0-rc.3

Just published a new version of FsUnit.Light package with new functions for testing exceptions in your taskswww.nuget.org/packages?q=F…#fsharp

— Vladimir Shchur (@lanayx.bsky.social) 2025-11-02T00:26:06.571Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Announcing Sponsorship on NuGet.org – .NET Blog
• Upgrading to Microsoft Agent Framework in Your .NET AI Chat App – .NET Blog
• Introducing Planning in Visual Studio (Public Preview) – Visual Studio Blog
• Expanding Model Choice in VS Code with Bring Your Own Key
• Integration Testing with Testcontainers – ISE Developer Blog
• Exciting new capabilities and enhancements for M365 Developer Program – October 2025 – Microsoft 365 Developer Blog

Announcing Sponsorship on NuGet[dot]orgis.gd/QYDXvi #dotnet #devcommunity #nuget #packagemanagers #sponsorship

— Alvin Ashcraft (@alvinashcraft.com) 2025-10-24T17:01:49.087Z

Videos

• NYC Functional Programming Videos – YouTube
• TinyHM 4.1 – How type inference in ML works – Tomas Petricek
• TinyHM 4.2 – Type systems and constraint solving – Tomas Petricek
• TinyHM 4.3 – Peano numbers and step by step guide – Tomas Petricek
• On .NET Live | Countdown to .NET Conf 2025
• ASP.NET Community Standup – The MCP authorization flow
• .NET AI Community Standup – Microsoft Agent Framework: Workflows & Migration Overview

In the next lab from my Tiny Systems course, you learn how type inference in ML-like languages works and write your own Hindley-Milner inference algorithm!🎞️ Watch the videos: http://www.youtube.com/watch?v=FUFQ…⌨️ Get the #fsharp code: github.com/tpetricek/ti…

— Tomas Petricek (@tomasp.net) 2025-10-23T19:58:41.426Z

Blogs

• Count distinct items with the CVM algorithm · Mathias Brandewinder blog

Highlighted projects

• fcolavecchia/fp-course-public: Make F# your first programming language
• ingted/Akka.WebSocket: Bind Akka.net and Suave WebSocket
• AngelMunoz/Kps: F# and MonoGame Project Structure
• ForNeVeR/Fabricator: The sharpest infrastructure automation tool.

New Releases

• FSharp.Idioms 1.5.1
• FSharp.Data.Npgsql5 3.0.2
• FAkka.WebSocket 1.0.3
• FsMath 0.0.2
• Akka.FSharp 1.5.54
• runfs 1.0.8
• ShapeSifter 1.1.17
• WoofWare.Myriad.Plugins 9.0.4
• G-Research.FSharp.Analyzers 0.19.0
• WoofWare.FSharpAnalyzers 0.2.1
• Feliz 3.0.0-rc.3
• Giraffe 8.1.0-alpha-001
• FSharp.Stats 1.0.0-preview.1
• Vitest 1.0.0-rc.2

I guess I forgot to mention that I added a bit of enemy behaviorLooks like cooldowns are not actually working, I need to check on that also, looks like dead entities still process their last command instead of just stay still when they die#fsharp #dotnet #gamedev #monogame

— Angel Munoz (@tunaxor.me) 2025-10-24T20:09:41.672Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Announcing .NET 10 Release Candidate 2 – .NET Blog
• Announcing the .NET Security Group – .NET Blog
• .NET and .NET Framework October 2025 servicing releases updates – .NET Blog
• Azure DevOps local MCP Server is generally available – Azure DevOps Blog
• PowerToys 0.95 is here: new Light Switch utility, faster Command Palette, and Peek with Spacebar – Windows Command Line

Write your own tiny programming system(s)! with Tomas Petricek

• TinyBASIC 3.1 – Commodore 64 BASIC and emulators
• TinyBASIC 3.2 – What you need to know about F#
• TinyBASIC 3.3 – Interpreter and step-by-step guide
• TinyML 2.1 – What you need to know about F#
• TinyML 2.2 – Language features and theory
• TinyML 2.3 – Interpreter and step-by-step guide
• TinySystems 1.1 – Why such a strange course topic?
• TinySystems 1.2 – Tiny systems as a methodology
• TinySystems 1.3 – Programming languages and systems
• TinySystems 1.4 – A taste of the F# language

Videos

• Func Prog Podcast Episode 12 – Almir Mesic
• Houston Haynes – Firefly – an F# compiler goes native to CPU, GPU and beyond
• ASP.NET Community Standup – Level up eShop with Blazor in .NET 10
• .NET Data Community Standup – Jeremy Miller shares his view on migrations and Marten
• On .NET Live | Infrastructure as Code with Pulumi

Blogs

• Guidance for .NET systems development – Tuomas Hietanen
• Using local LLMs from F# – Tuomas Hietanen
• ModelContextProtocol with FSharp (MCP with F#) – Tuomas Hietanen
• The SPEC Stack: A Proposal – Houston Haynes
• Victor: A Tool for Managing the SPEC Stack – Houston Haynes

Our Victor CLI tool is a play on words for the idea that Hugo templates should be fair game from bringing into the #fsharp framework. speakez.tech/blog/victor-…

— SpeakEZ.tech (@speakeztech.bsky.social) 2025-10-17T13:37:25.012Z

F# vNext

• Algebraic Effects · Issue #1449 · fsharp/fslang-suggestions

Highlighted projects

• Thorium/FunStripe.Sample: A complete, production-ready sample application and integration guide for the FunStripe library based on the existing Stripe payment processing patterns.
• Thorium/fabulousMauiTutorial: Android and iOS mobile application using .NET MAUI with Fabulous abstraction layer
• Thorium/WebsitePlayground: This is a nice sample-web-stack.
• speakeztech/CloudflareFS: Toolkit for building modern Cloudflare Solutions with F# and Fable Compiler
• alexzzzs/SharpParser.Core: A beginner-friendly, event-driven F# parsing library for language design and implementation.
• LiteracyFanatic/kensaku: Quick and easy search for Japanese kanji, radicals, and words

New Releases

• Farmer 1.9.23
• SwaggerProvider 2.3.2
• SharpParser.Core 1.3.0
• Akka.FSharp 1.5.54
• HeterogeneousCollections 1.0.14
• Prime 11.1.5
• WoofWare.Myriad.Plugins 9.0.3
• WoofWare.Expect 0.8.4
• Equinox.MessageDb 4.1.0
• FCQRS.Model 4.0.0
• FSharp.Idioms 1.4.38
• XParsec 0.2.3
• SharpVG 0.0.20
• Thoth.Json.Newtonsoft 0.3.3
• Thoth.Json.System.Text.Json 0.2.2
• Feliz.Bulma 4.1.0
• Feliz.Konva 0.0.5
• Fable.Jester4 0.34.0
• Fable.FastCheck4 0.34.0
• FS.FluentUI.Charts 1.0.0-beta02
• Kensaku.Core 0.1.0-preview.1
• Kensaku.Schema 0.1.0-preview.1
• FSharp.Core 10.0.100-rc2.25502.107
• FSharp.Compiler.Service 43.10.100-rc2.25502.107

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Preparing for the .NET 10 GC (DATAS) – .NET Blog
• Developer and AI Code Reviewer: Reviewing AI-Generated Code in .NET – .NET Blog
• September 2025 (version 1.105)
• Visual Studio Dev/Test Benefit Explained – Visual Studio Blog
• Developer and AI Code Reviewer: Reviewing AI-Generated Code in .NET – .NET Blog

It's not too late to join the #JetbrainsDotnetDays2025 and come and find out why functional programming in #fsharp is either a passing fad or absolutely fabulous!blog.jetbrains.com/dotnet/2025/…Many thanks to @jetbrains.com for organising this!

— Ken Bonny (@kenbonny.net) 2025-10-09T09:08:20.299Z

Videos

• .NET Days Online 2025, Day 1: Aspire, Clean Architecture, C# Nullability, Messaging, Uno, Blazor TDD
• .NET Days Online 2025, Day 2: Event-Driven Systems & GenAI with Aspire, F#, dotMemory, and More.
• ASP.NET Community Standup – Razor Reloaded
• .NET AI Community Standup – Getting Started with the Microsoft Agent Framework – YouTube
• On .NET Live | Simplifying API Design with the REPR Pattern and FastEndpoints – YouTube

Blogs

• Study notes: Softmax function · Mathias Brandewinder blog
• Tips for Unit Testing Fable Apps using .NET | Jordan Marr

Blog post: Tips for unit testing #fsharp Fable apps using .NET:jordanmarr.github.io/fsharp/unit-…

— Jordan Marr (@jordanmarr.bsky.social) 2025-10-05T19:37:16.866Z

F# vNext

• `MatchFailure`/`MatchSkip` patterns · Issue #1448
• System.Text.Json : Consider supporting F# discriminated unions · Issue #55744 · dotnet/runtime

Highlighted projects

• alexzzzs/SharpParser.Core: A beginner-friendly, event-driven F# parsing library for language design and implementation.
• LiteracyFanatic/kensaku: Quick and easy search for Japanese kanji, radicals, and words
• reallukee/confole: 🎨 Abbellisci la tua app console F# in modo funzionale
• ChrisPritchard/Xelmish: XNA + Elmish – 2D game development framework with F#
• WyattTechnology/WAkka: F# interface for Akka.NET
• speakeztech/fs-fileshare: A Cloudflare-based file sharing solution built with F#, Fable and deployed into Cloudflare
• speakeztech/CloudflareFS: Toolkit for building modern Cloudflare Solutions with F# and Fable Compiler

New Releases

• ResizeArrayT 0.25.0
• Str 0.20.0
• Dicts 0.5.0
• ArrayT 0.24.0
• Fesh 0.28.1
• Farmer 1.9.22
• Akka.FSharp 1.5.53
• SharpParser.Core 1.2.0
• FarNet.FSharpFar 5.1.5
• FSharp.Idioms 1.4.36
• Jade.Marten 2.0.1
• Reallukee.Confole 1.1.0
• Farse 0.5.2
• xelmish 1.0.0.1
• fsharp-gamecore 1.0.0.1
• astar-search 1.0.3
• WAkka 1.5.4
• SharpVG 0.0.20
• TypeEquality 0.4.2
• Partas.Solid 2.1.3
• DbFlow 0.5.1
• FsHttp 15.0.3
• Kensaku.DataSources 0.1.0-preview.2
• Feliz 3.0.0-rc.2
• Feliz.Template 5.0.0-rc.3
• Swate.Components 1.0.0-rc.8

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Introducing Microsoft Agent Framework (Preview): Making AI Agents Simple for Every Developer – .NET Blog
• Grok 4 is now available in Microsoft Azure AI Foundry | Microsoft Azure Blog
• Roadmap for AI in Visual Studio (October) – Visual Studio Blog
• The $150 Secret Hiding in Plain Sight – Visual Studio Blog
• Visual Studio September Update – profiler agent, app modernization, and more – Visual Studio Blog
• TypeScript 7 native preview in Visual Studio 2026 – Microsoft for Developers

Videos

• Houston Haynes – Firefly – an F# compiler goes native to CPU, GPU and beyond – YouTube
• Does F# need file-based apps – Amplifying FSharp
• ASP.NET Community Standup – Vibe coding a C# MCP server
• .NET MAUI Community Standup – Live from Prague with the .NET MAUI Team

Blogs

• Unexpected Fusion – Houston Haynes

F# Language Suggestions

• Request for Delegate Generic Parameter Erasure for Span<T> Operations · Issue #1447
• Allow the use of colon in all custom operators · Issue #1446

Highlighted projects

• speakeztech/CloudflareFS: Toolkit for building modern Cloudflare Solutions with F# and Fable Compiler
• G-Research/ShapeSifter: Type-safe datatype-generic programming for F
• WyattTechnology/WAkka: F# interface for Akka.NET
• DCPRevere/jade: F# Event Sourcing Library
• cmeeren/Felicity: Boilerplate-free, idiomatic JSON:API for your beautiful, idiomatic F# domain model. Optimized for developer happiness.

New Releases

• FsToolkit.ErrorHandling 5.1.0
• SqlBulkTools.FSharp 1.1.0
• FsHttp 15.0.3
• Felicity 0.24.3
• Fesh 0.28.1
• Akka.FSharp 1.5.51
• ShapeSifter 1.1.16
• Partas.AnimeJs 0.0.8
• Prime 11.1.4
• FarNet.FSharpFar 5.1.4
• WAkka 1.5.4
• WoofWare.FSharpAnalyzers 0.1.3
• WoofWare.PrattParser 0.2.5
• WriteBetterTests.FsCheckSpy 1.0.0
• Felicity 0.24.3
• Terminal.Gui 2.0.0-develop.4573
• Feliz.Template 5.0.0-rc.1
• Vitest 1.0.0-rc.1
• Feliz 3.0.0-rc.1

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Announcing Aspire 9.5 – .NET Blog
• Exploring Text-to-Image capabilities in .NET – .NET Blog
• New Trusted Publishing enhances security on NuGet.org – .NET Blog
• Preparing Your .NET MAUI Apps for Google Play’s 16 KB Page Size Requirement – .NET Blog
• Unlocking MCP in JetBrains: How Copilot Uses Sampling, Prompts, Resources, and Elicitation – Microsoft for Java Developers
• Visual Studio 2026 Insiders: Using Podman for Container Development – Microsoft for Developers
• Enhancements to XAML Live Preview in Visual Studio for .NET MAUI – Visual Studio Blog
• Agent Factory: Designing the open agentic web stack | Microsoft Azure Blog

Does #fsharp need file-based apps like C#?. Join us next Friday for a new session where Martin will showcase a prototype for "dotnet run app.fs"-like functionality.More info: amplifyingfsharp.io/sessions/202…

— (@amplifyingfsharp.io) 2025-09-26T15:22:08.351Z

Videos

• 5 Fundamental F# Features C# Will Never Have
• Modernize .NET apps in days with GitHub Copilot

#fsharp features #csharp will never have. youtu.be/uqijfxvlCqI

— Amin Khansari (@akhansari.tech) 2025-09-24T11:19:09.595Z

Blogs

• A 50 Year Odyssey: Actors Take Center Stage – Houston Haynes
• Your Data, Your Rules – Houston Haynes
• Is SOLID still a solid choice for software design? | by Vladimir Shchur
• F# has quite a steep learning curve for most devs. | by Bananica Bananica

F# Language Suggestions

• Allow using byref<‘T,’Kind> for type inference · Issue #1445
• Proposal: Allow ‘T shorthand for dummy type values in SRTP constraints · Issue #1444
• Syntax for generic constraint inference on members · Issue #1443
• Proposal: Add concise syntax for separating namespace and module declarations · Issue #1441
• Inline compiler warnings and errors · Issue #1439
• Better handling of `if` inside one-line lists · Issue #1438
• Lambda shorthand for function and method arguments · Issue #1437
• Warn when a function is an interpolated string argument / when a type that isn’t IFormattable gets format arguments · Issue #1435
• Names for tuple fields and function parameter types · Issue #1434
• Allow more undentation for tuples and dot-access (or give indentation warning instead of error) · Issue #1433
• Allow multiple guard clauses for a single arm in pattern matchings · Issue #1432
• Simplify implementation of interface hierarchies with equally named abstract slots · Issue #1430

Highlighted projects

• Martin521/Runfs: Prototype for “dotnet run app.fs”-like functionality
• callmekohei/Csvfs.LineSlicer: F# library for CSV line slicing with predictable memory and flexible quoting and line endings

New Releases

• runfs 1.0.7
• FsToolkit.ErrorHandling 5.1.0
• SqlBulkTools.FSharp 1.0.0
• Ecng.Compilation.FSharp 1.0.84
• Farse 0.5.1
• StarFederation.Datastar 1.1.1
• Glutinum.ZagJs 0.4.0
• Equinox.Tool 4.1.1
• Propulsion 3.0.0
• Akka.FSharp 1.5.50
• FSharp.Idioms 1.4.35
• Reallukee.Confole 1.0.0
• Prime 11.1.3
• FsSpreadsheet 7.0.0-alpha.1

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• .NET STS releases supported for 24 months – .NET Blog
• Announcing: JetBrains .NET Days Online 2025 | The .NET Tools Blog
• Application Insights Code Optimizations for .NET Apps – .NET Blog
• Prompt Files and Instructions Files Explained – .NET Blog
• AI-Assisted Development powered by Local Models | Azure AI Foundry Blog
• GitHub app for Teams now in public preview – Microsoft 365 Developer Blog
• Getting the most out of MCP in Visual Studio with Prompts, Resources, and Sampling – Visual Studio BlogIntroducing auto model selection (preview)
• Introducing auto model selection (preview)

Videos

• What I have learned from 15 years of functional programming of FP 2025
• This Explains Why C# 14 Feels So Much Like F#
• Fast Focus – Introduction to Model Context Protocol (MCP) Servers
• ASP.NET Community Standup – .NET WebAssembly performance improvements
• .NET MAUI Community Standup – Talking RC1, iPhone, and more
• .NET Data Community Standup – Let’s talk about experience with Dapper and EF Core

Blogs

• C# will become F# – Gautier Talks About Microsoft Technology
• The Uncomfortable Truth of Comfortable Dysfunction

.NET STS releases are now supported for 2 years instead of 18 months starting with .NET 9 (the current STS). STS releases now go out-of-support on the same day as the previous LTS release. Upgrading to an STS release will no longer cause you to lose support!devblogs.microsoft.com/dotnet/dotne…

— Damian Edwards (@damianedwards.com) 2025-09-16T17:56:08.203Z

Highlighted projects

• falcoframework/Falco.OpenApi: OpenAPI integration for Falco.
• cmeeren/Felicity: Boilerplate-free, idiomatic JSON:API for your beautiful, idiomatic F# domain model. Optimized for developer happiness.
• cmeeren/Faqt: Fluent assertions for F#
• Smaug123/WoofWare.Myriad: Some Myriad source generators for F#
• tommililja/Farse: Simple parsing library for F# using System.Text.Json.

New Releases

• SQLProvider 1.5.17
• Partas.Solid 2.1.1
• Felicity 0.24.2
• DbFlow 0.4.0
• Faqt 5.1.0
• HashifyNET 6.1.0
• FsHttp 15.0.2
• Reallukee.Confole 1.0.0
• WoofWare.Myriad.Plugins 8.1.1
• Falco.OpenApi 1.1.0
• Falco.Htmx 1.1.0
• Farse 0.4.0
• EasyBuild.ChangelogGen 5.0.1

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!