# F# Weekly #24, 2019 – Fabulous on Tizen and new System.Text.Json APIs!

**URL:** <https://forums.fsharp.org/t/f-weekly-24-2019-fabulous-on-tizen-and-new-system-text-json-apis/860>\
**Category:** General\
**Tags:** news\
**Created:** [June 15, 2019, 9:54am UTC](https://forums.fsharp.org/t/f-weekly-24-2019-fabulous-on-tizen-and-new-system-text-json-apis/860 "2019-06-15T09:54:30Z")\
**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:** [June 15, 2019, 9:54am UTC](https://forums.fsharp.org/t/f-weekly-24-2019-fabulous-on-tizen-and-new-system-text-json-apis/860/1 "2019-06-15T09:54:30Z")

</div>

Welcome to F# Weekly,

A roundup of F# content from this past week:

**News**

- [Announcing ML.NET 1.1 and Model Builder updates](https://devblogs.microsoft.com/dotnet/announcing-ml-net-1-1-and-model-builder-updates-machine-learning-for-net/)
- [Announcing .NET Core 3.0 Preview 6](https://devblogs.microsoft.com/dotnet/announcing-net-core-3-0-preview-6/)
- [Try the new System.Text.Json APIs](https://devblogs.microsoft.com/dotnet/try-the-new-system-text-json-apis/)
- [Calling Infer.NET from F#](https://dotnet.github.io/infer/userguide/FSharp%20Wrapper.html)
- [Anonymous Records Docs](https://docs.microsoft.com/en-us/dotnet/fsharp/language-reference/anonymous-records)
- [Check out FableConf Agenda](https://fable.io/fableconf/#agenda)
- Fabulous: [Add the Fabimals sample](https://github.com/fsprojects/Fabulous/pull/450) & [Fabulous on the Watch (Tizen)](https://twitter.com/steinuil/status/1139121572663439361)
- Websharper: [MVU Tic-Tac-Toe tutorial](http://try.websharper.com/snippet/loic.denuziere/0000Ln)
- [Trace .NET Core Applications on Linux with strace](https://gist.github.com/ninjarobot/851564aaf82d1fe2ef0cd3d2bbedf430#trace-net-core-applications-on-linux-with-strace)
- [Visual Studio 2019 for Mac version 8.1](https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2019-mac-relnotes#whats-new-in-visual-studio-2019-for-mac)

> <https://twitter.com/dsyme/status/1138132727557951488>

**Videos & Slides**

- [Event Sourcing DIY - Intro, Domain Driven Design - S2E01](https://www.youtube.com/watch?v=5MfayEriOkg&feature=youtu.be) - Roman Sachse
- [F# and Xamarin.Forms! Talking Fabulous with one of the lead maintainers Tim Lariviere](https://www.twitch.tv/videos/438952799)
- [Try the new System.Text.Json APIs!](https://www.youtube.com/watch?v=gb3zcdZ-y3M)

**Blogs**
- [Home Grown IoT Part 4 - Data Downloader](https://www.aaron-powell.com/posts/2019-06-12-home-grown-iot-data-downloader/) by Aaron Powell
- [Learning F# — A Simple Parser](https://citizen428.net/blog/learning-fsharp-a-simple-parser/) - Michael Kohl
- [Implementing Sign In with Apple in ASP.NET Core](https://www.scottbrady91.com/OpenID-Connect/Implementing-Sign-In-with-Apple-in-ASPNET-Core) - Scott Brady

**F# vNext:**
- CoreFX: [Ensure JSON serializer/deserializer can handle common F# types](https://github.com/dotnet/corefx/issues/38348)
- emacs-lsp/lsp-mode: [Add F# Language support](https://github.com/emacs-lsp/lsp-mode/pull/880)
- New language sugestions:
  - [Special inline active patterns that have an effect on exhaustiveness warnings](https://github.com/fsharp/fslang-suggestions/issues/755)
  - [new System.IO.MemoryStream // Now without parentheses!](https://github.com/fsharp/fslang-suggestions/issues/753)
  - [Patterns for self identifiers](https://github.com/fsharp/fslang-suggestions/issues/752)
  - [Support C#-style Deconstruct method based pattern matching](https://github.com/fsharp/fslang-suggestions/issues/751)
  - [Safe versions for built-in number conversion functions](https://github.com/fsharp/fslang-suggestions/issues/749)
  - [Public []s as static members](https://github.com/fsharp/fslang-suggestions/issues/746)
  - [Allow optional members to be inferred as part of signature when appropriate](https://github.com/fsharp/fslang-suggestions/issues/745)
  - [Allow variable patterns for tuples in Discriminated Union matching](https://github.com/fsharp/fslang-suggestions/issues/743)

> <https://twitter.com/_cartermp/status/1139209623846522880>

**GitHub projects**

- [mikhailshilkov/pulumi-fsharp](https://github.com/mikhailshilkov/pulumi-fsharp) - Very experimental PoC of running Pulumi as F# CEs

**New Releases**
- [FSharp.Compiler.Service 29.0.1](https://twitter.com/NuGetLatest/status/1138133790012956672)
- [F# mode for Emacs 20190609.1317](https://melpa.org/#/fsharp-mode)
- [FSharp.Text.RegexProvider 2.0.1](https://www.nuget.org/packages/FSharp.Text.RegexProvider/)
- [MathNet.Numerics.FSharp.Signed 4.8.1](https://twitter.com/NuGetLatest/status/1138581968726216704)

> <https://twitter.com/IonideProject/status/1138572284082491392>

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

Previous F# Weekly edition – [#23, 2019](http://sergeytihon.com/2019/06/08/f-weekly-23-2019-wf-wcf-for-net-core-ml-net-1-1/)