F# Weekly #49, 2020 – #FsAdvent and Fable 3

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Announcing Fable 3 Nagareyama (ycombinator)
• TensorFlow AutoGraph for .NET
• .NET Core 2.1, 3.1, and .NET 5.0 updates are coming to Microsoft Update
• Improving Debug-time Productivity with Source Link
• ML.NET Model Builder November Updates
• Introducing WaveEngine 3.1 based on .NET 5

Today is the day, Fable 3 #nagareyama is officially released! #fsharp https://t.co/mhy3huWvbE

— Fable Compiler (@FableCompiler) December 4, 2020

F# Advent Calendar 2020

• Code as a Vote – Paweł Stadnicki
• Cellular Automata in F# – Logan Mortimer
• Fable Web Components – Onur Gümüş
• Creating your first GitHub codespace for F# and .Net 5.0 – Esteban Solano G
• Introduction to Partial Function Application in F# – Ian Russell
• Converting asynchronous cancellation from C# to F# – Tyson Williams
• Parsing Programming Languages with FParsec – Ambika Eshwar
• A mouse in a box – Tonino Lucca
• F# Compiler Messages – Brett Rowberry
• Validation with F# 5 and FSToolkit – Ryan Palmer
• How to make an F# Code Fixer – Phillip Carter
• Applicative Computation Expressions – 3 – Jérémie Chassaing
• F# Interactive now with Stories! – Asti
• FsToolkit.Errorhandling 2.0 – Jimmy Byrd
• Church Encoded Lists – Mårten Rånge

Videos and Slides

• Go Pro on .NET with F# by Isaac Abraham
• Advent of Code 2020 in F# with Jo Van Eyck
• .NET Tooling Community Standup – .NET 5 Performance with Stephen Toub
• The .NET Docs Show – C# 9: A functionally better release with Dave Brock
• ASP.NET Community Standup – ASP.NET Core Architecture with David Fowler
• Setting Up Feature Flags with .NET
• Xamarin Community Standup – .NET MAUI Update!
• Blazor: Client Side vs. Server Side: Hands on Development and Deployment
• How to Start Contributing To Open-Source

Blogs

• Presenting Mondocks – Angel D. Munoz
• Writing Formatter Extensions for .NET Interactive – Gregor Beyerle
• Building an MQTT server in F# – Part 2 – codesuji
• Our journey to F#: bye-bye fluent syntax Version 2 – Urs Enzler
• The Mentor Matching Problem – Matthew Crews
• The Under Appreciated Power of Object Expressions – Matthew Crews

F# vNext

• Ionide 5.0 roadmap
• F# language suggestions:
  • Language Validation/Constraint Support For Types
  • Expose GetInvocationList from F# event
  • Add support for mixed async/nonasync branches in thernary if clause (corresponding to C#)
  • Make ModuleSuffix the default compilation representation

Today I learned that if you're making a .NET Command Line tool, you should add

<RollForward>Major</RollForward>

to the project file for building the tool. This will allow it to be used with only .NET 5.0 SDK+runtime installed, even if your tool targets .NETCoreApp 3.1.

— Don Syme (@dsymetweets) December 1, 2020

GitHub projects

• Tarmil/Argu.MicrosoftExtensions – Integrate Argu (http://fsprojects.github.io/Argu/), the F# argument and configuration parsing library, into Microsoft.Extensions hosted applications.
• CSBiology/FSharp.Stats – F# project for statistical computing
• pj/hacn – DSL for creating React components using Fable and F# computation expressions

New Releases

• Falco 3.0 with .NET 5 support
• Feliz.Bulma.DateTimePicker
• Fable.React.DrawingCanvas 1.0.1
• AltCover 7.2.800

20,000 Elmish React Particles! A port from JS to Fable.#fable #fsharp @alfonsogcnunez @MaximeMangel https://t.co/m6PPtcs8ae

— David Dawkins (@DaveDawkins) December 2, 2020

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

Previous F# Weekly edition – #48, 2020