interactive VS Giraffe

All of this will be accomplished inside of a single Polyglot Notebook. If you're not familiar with Polyglot Notebooks, they're a technology built on top of Jupyter Notebooks that allow you to use additional language kernels, including a F# Kernel. This lets you run interactive data science experiments in a single notebook as shown here in VS Code:

I use .NET on Linux and the experience with Rider has been great. The workflow transfers really well between Mac, Windows, and Linux, and everything works the way you expect. The only problems I run into are that there are still things that are Windows focused. For example MAUI does not run on Linux which is a shame because we could use another cross platform GUI.

There are still bugs, for example I ran into one with Polyglot Notebooks not working on Manjaro or Pop!_OS https://github.com/dotnet/interactive/issues/3159

First of all, if you have a small amount of code that lives in an individual C# file and you wanted to reference it in your notebook, you can do this via the #!import magic command as shown below:

My 2 cents: use a Personal Access Token instead of a password, it is much safer (even though not 100% safe). Some references: https://github.com/dotnet/interactive/discussions/1340 https://learn.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate

See also https://github.com/dotnet/interactive

U have Powershell notebooks https://github.com/dotnet/interactive

Or Rider or simply install dotnet by itself (very easy) and code in a notepad or VSCode. .NET interactive is another awesome way to start: https://github.com/dotnet/interactive/blob/main/docs/display-output-csharp.md

Hi! My name is Claudia and I am a PM at Microsoft (opinions are my own) working on Polyglot Notebooks in VS Code. Polyglot Notebooks are exactly what you are describing! They are notebooks where you can use multiple languages AND share variables between them to ensure a continuous workflow. Not only that, but each language has language server support. Polyglot Notebooks currently supports C#, F#, PowerShell, JavaScript, HTML, SQL, KQL, and Mermaid.

We have just added support for Python and R integration and I am actually in search of external testers! If you are willing to sign an NDA to try out our Python and R integration and give us feedback please drop your email in the form below and I will reach out with instructions for you to try it out!

https://forms.office.com/r/UQchfQSGa5

If you'd like to start trying it out today you can install the extension from the marketplace here: https://marketplace.visualstudio.com/items?itemName=ms-dotne...

https://github.com/dotnet/interactive

I've been excited about a lot of the work being done in .NET Interactive and Polyglot Notebooks, particuarly with ML with F#. I don't know too much about ML, so I thought I'd check out ML.NET.

Giraffe is another interesting one to explore: https://giraffe.wiki/

Giraffe is nice because it is itself built "just" as ASP.NET Core Middleware so it plays a bit more nicely than Suave with a mixed stack of C#-defined Middleware.

It's more likely you accidentally fall back into just translating C# patterns to non-idiomatic F# with Giraffe, but it's also nicer when in that case of needing to live in both worlds and use a mixture of libraries built for C# ASP.NET projects.

There are also some F# frameworks built on top of ASP.NET core like https://giraffe.wiki

If you have an interest in F#, I highly recommend diving in because (1) it has a ton of things you might learn to appreciate in C#; (2) it has things C# cannot have. I do like some of the suggestions people have made regarding mixing your code bases, but I'll also say that building, say, endpoint routing in Giraffe is (to repeat myself) easy, simple, and elegant.

Bix is a micro-framework designed with F# in mind and that runs on both Deno and Bun! and in theory it also should even run in a service worker! (intercepting fetch requests) although I haven't tested that yet, it offers a general purpose handler that coupled with a set of route definitions it can bring a Giraffe/Saturn like framework to life in JavaScript runtimes which is incredibly awesome! useful? maybe not 😅, but awesome indeed. Let's see some code for it

Backend: Most likely it would be a toss between https://saturnframework.org or https://giraffe.wiki. They both combins the extremely good type system in F# combined with the ease of a minimal API.

I was wondering if its possible to simultaneously run a C# core MVC project in combination with https://github.com/giraffe-fsharp/Giraffe

By default Giraffe, the framework which I use as a web server, uses Newtonsoft.Json to serialize results to JSON. However, for discriminated union, it generates quite a lot of JSON so I've switched to System.Text.Json which is built into newer versions of .Net Core. In combination with FSharp.SystemTextJson package allows serializing discriminated unions more gracefully. All we need is to decorate Branch type with JsonFSharpConverter(JsonUnionEncoding.BareFieldlessTags) attribute.

Giraffe is a library that sits atop ASP.NET Core and allows developers to build web applications in a functional style; dotnet new giraffe is literally my starting point when I begin a new web application project. (Rather than write three more sentences filled with effusive praise, I’ll just leave it at that; it’s great.) It also provides a view engine (that builds upon Suave‘s “experimental” view engine) which uses an F# DSL to define HTML in a strongly-typed way. It has been incredibly efficient for a while, but with .NET’s work over the past two releases at improving performance, and Giraffe’s adoption of those techniques, it is lightning fast.

Wrapping ASP.NET Core to be easier and more idiomatic with F# seems to be a common domain. Out of curiosity, did you look at any existing projects? If so, what was lacking from them that made you decide to write WebFrame?

Giraffe: https://github.com/giraffe-fsharp/Giraffe