F# Weekly #2, 2025 – Pandora Jewelry uses F#

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• .NET Aspire Quick Tip – Managing Container & Data Lifetime – .NET Blog
• Benchmarking with Visual Studio Profiler – Visual Studio Blog
• Unlocking insights with Meter Histogram in the profiler – Visual Studio Blog
• Boost processing performance by combining AI models | Microsoft Azure Blog

Videos

• .NET MAUI Community Standup – 2025 New Year Kickoff – YouTube
• Languages & Runtime Community Standup – .NET 9 Performance Improvements Q&A – YouTube
• ASP.NET Community Standup – Contributing to the ASP.NET Core Repo – YouTube
• On .NET Live – Hands-on Resilient Programming – YouTube
• Day 10 of F# Advent Calendar: Intro to FS.FluentUI – YouTube

Blogs

• Memoization for a recursive function in F# | Damir’s Corner
• Converting an F# pipeline into a C# fluent interface · Mathias Brandewinder blog
• F# features I love – Amin Khansari
• Leveraging Immutability and Observability for Reliable Undo/Redo in Document-Based Applications
• F# 9 wrap up | Compositional IT

F# vNext

• for…in…while · Issue #1400 · fsharp/fslang-suggestions · GitHub

Highlighted projects

• fsprojects/FSharp.Collections.Builders: Computation expressions for conveniently and efficiently constructing common collections.
• SchlenkR/TypeFighter: A graph based approach to type inference written in F#
• SchlenkR/Trulla: Type Safe Text Templates – usable as type provider (F#) or source generator (C#)
• jtucker/the-f-in-function: F# Azure Function with Devcontainer that runs on Apple Silicon
• daviatorstorm/fsharp-finances: If you have finances to analyze – just do the F#
• PandoraJewelry/Pandora.Apache.Avro.IDL.To.Apache.Parquet: We present an open-source library, that will help transform AVRO, with nested data, to multiple PARQUET files where each of the nested data elements will be represented as an extension table (separate file).

FuncUI hit 1K stars on GitHub 🎉Only took ~6 years 🙂github.com/fsprojects/A…#fsharp

— JaggerJo (@jaggerjo.bsky.social) 2025-01-05T22:44:48.999Z

New Releases

• Fantomas 7.0
• Fornax.Seo 1.4.0
• FS.FluentUI 2.2.0
• G-Research.FSharp.Analyzers 0.12.1
• FSharp.Stats 0.6.0
• Akka.FSharp 1.5.34
• SwaggerProvider 2.2.0
• FsToolkit.ErrorHandling 5.0.0-beta003
• Fable 5.0.0-alpha.5

We are excited to announce the release of #fantomas 7! Check it out here: github.com/fsprojects/f… A big thank you to all the contributors! #fsharp

— Florian Verdonck (@nojaf.com) 2025-01-10T15:15:29.229Z

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!