# F# Weekly #21, 2019 – Ionide 4.0 & Fable Announcements

**URL:** <https://forums.fsharp.org/t/f-weekly-21-2019-ionide-4-0-fable-announcements/823>\
**Category:** General\
**Tags:** news\
**Created:** [May 25, 2019, 11:25am UTC](https://forums.fsharp.org/t/f-weekly-21-2019-ionide-4-0-fable-announcements/823 "2019-05-25T11:25:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sergey\_tihon](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/sergey_tihon/32/25_2.png) [@sergey\_tihon](https://forums.fsharp.org/u/sergey_tihon)\
**Post date:** [May 25, 2019, 11:25am UTC](https://forums.fsharp.org/t/f-weekly-21-2019-ionide-4-0-fable-announcements/823/1 "2019-05-25T11:25:26Z")

</div>

Welcome to F# Weekly,

A roundup of F# content from this past week:

**News**

- [The F# development home on GitHub is now dotnet/fsharp](https://devblogs.microsoft.com/dotnet/the-f-development-home-on-github-is-now-dotnet-fsharp/)
- [Roadmap to Ionide 4.0](https://github.com/ionide/ionide-vscode-fsharp/issues/1108)
- [May Announcements for Fable](https://fable.io/blog/2019-May-Announcements.html)
- [Visual Studio 2019 version 16.1](https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes#--visual-studio-2019-version-161-)
- [WinUI 3.0 roadmap - we need your input](https://github.com/microsoft/microsoft-ui-xaml/issues/717)
- [Welcome to the Shell Era: Xamarin.Forms 4.0 Released](https://devblogs.microsoft.com/xamarin/introducing-xamarin-forms-4-0-the-era-of-shell/)

> <https://twitter.com/0xaryan/status/1130548970177159169>

**Videos & Slides**

- [Languages & Runtime: .NET Community Standup - May 23, 2019](https://www.youtube.com/watch?v=1UJfkMIf2Gk)
- [A Look at the ML.NET Model Builder](https://www.youtube.com/watch?v=2M75v9z9R2U) - Jon Wood
- [Fabulous Functional Frontends](https://speakerdeck.com/mallibone/fabulous-functional-frontends-mobile-usergroup-luzern) - Mark Allibone

**Blogs**
- [Domain Modeling Made Functional](https://isthisit.nz/posts/2019/domain-modeling-made-functional/) - ‏Logan Mortimer
- ["5M bid request/s, 2ms Max Response Time - The Road to Damascus" using F# & libuv for high performance bidding at SamsungAds/adgear.com](https://github.com/eloraiby/fs-pacer/blob/master/fs-pacer.md) - Wael El Oraiby
- [The Dangers of Task.Factory.StartNew](https://sergeyteplyakov.github.io/Blog/async/2019/05/21/The-Dangers-of-Task.Factory.StartNew.html) - Sergey Teplyakov
- [Profiling .NET Core Memory Traffic using JetBrains dotMemory](https://www.stevejgordon.co.uk/profiling-dotnetcore-memory-traffic-using-jetbrains-dotmemory) - Steve Gordon
- [WCF vs gRPC](https://unwcf.com/posts/wcf-vs-grpc/) - Mark Rendle

**F# vNext:**
- [Update FSharp.Core to netstandard2.0](https://github.com/dotnet/fsharp/pull/6771)
- [FsAutoComplete: Refactor Symbol Cache](https://github.com/fsharp/FsAutoComplete/pull/384)
- [Ionide Experimental v0.2.0](https://github.com/ionide/ionide-vscode-fsharp/issues/1075) ([signature search](https://twitter.com/k_cieslak/status/1130920232678240256) and [big refactoring of the project system](https://twitter.com/enricosada/status/1130947395024543744))

> <https://twitter.com/sforkmann/status/1131943442316238850>

**GitHub projects**

- [FSharp.Control.WebSockets](https://github.com/TheAngryByrd/FSharp.Control.Websockets#why) - wraps dotnet WebSockets in FSharp friendly functions and has a ThreadSafe version.
- [Thoth.Fetch](https://github.com/thoth-org/Thoth.Fetch) - provides tried an easy to use API for working with Fable.Fetch and Thoth.Json. It supprots both manual and auto coders depending on your preferences
- [Zaid-Ajaj/Elmish.AnimatedTree](https://github.com/Zaid-Ajaj/Elmish.AnimatedTree) - An animated tree user interface made for Elmish applications

**New Releases**
- [Fabulous 0.35 with Xamarin.Forms 4.0 support](https://github.com/fsprojects/Fabulous/releases/tag/0.35.0)
- [WebSharper 4.5.5 introducing dynamic templates](https://forums.websharper.com/blog/86100)
- [Fable.ReactNative 2.0](https://twitter.com/sforkmann/status/1130806260478222337)
- [XamarinForms.Reactive.FSharp 1.0.1.71](https://www.nuget.org/packages/XamarinForms.Reactive.FSharp/1.0.1.71)
- [DurableFunctions.FSharp 0.4.0](https://www.nuget.org/packages/DurableFunctions.FSharp/0.4.0)
- [FSharp.Control.Websockets 0.2.0](https://www.nuget.org/packages/FSharp.Control.Websockets/0.2.0)
- [FSharp.Control.Websockets.TPL 0.2.0](https://www.nuget.org/packages/FSharp.Control.Websockets/0.2.0)

> <https://twitter.com/_cartermp/status/1132015283437096961>

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

Previous F# Weekly edition – [#20, 2019](http://sergeytihon.com/2019/05/19/f-weekly-20-2019-dotnet-fsharp-2019-board-of-trustees-campaign/)