language-ext VS Paket

You probably noticed that .SetName() returns a Either. You may have come across Unit in libraries like MediatR or Language-Ext. It's a simple construct representing a type with only one possible value. We use it as a placeholder for operations that do not return a value but may return another state. In our example, .SetName() is a Command that does not return a value but may fail. Therefore, the monad Either carries two possible states: Right (without value) or Left (with an Error).

Language-Ext is my personal favourite, but it can be a bit overwhelming for beginners due to its extensive feature set

> but I just want something closer to Scala, but for .Net

That's what I'm working toward with my language-ext library [1]. Obviously more support for expression based programming would be welcome (and higher kinds), but you can do a lot with LINQ and a good integrated library surface.

[1] https://github.com/louthy/language-ext

Definitely a fan of option types, I wonder this library has anything over the C# library language-ext which also has an Option type?

Hey, I am considering adopting the Result pattern in my codebase. Wanted to get some opinions from someone who has experience with it: should I start with language-ext or FunctionalExtensions?

> [1] https://github.com/louthy/language-ext

Cool library. I've had a few of these patterns in my Sasa library for years, but you've taken it to the Haskell extreme! Probably further than most C# developers could stomach. ;-)

You might be interested in checking out the hash array mapped trie from Sasa [1]. It cleverly exploits the CLR's reified generics to unbox the trie at various levels which ends up saving quite a bit of space and indirections, so it performs almost on par with the mutable dictionary.

I had an earlier version that used an outer struct to ensure it's never null, similar to how your collections seem to work, but switched to classes to make it more idiomatic in C#.

I recently started sketching out a Haskell-like generic "Deriving" source generator, contrasted with your domain-specific piecemeal approach, ie. [Record], [Reader], etc. Did you ever try that approach?

[1] https://sourceforge.net/p/sasa/code/ci/default/tree/Sasa.Col...

[2] https://sourceforge.net/p/sasa/code/ci/57417faec5ed442224a0f...

languageext supports linq for its monads and I kinda love it. The challenge is convincing my colleagues. 😅

language-ext supports it and it's pretty dang cool.

I can only recommend c# language extensions library https://github.com/louthy/language-ext

I'm not sure if it will help in your scenario, but faced with a similar problem (~80 project solution, mixed c#/f#, with varying dependencies), I found success with Paket (https://github.com/fsprojects/Paket)

It is much more prevalent in the f# community (at this point `dotnet restore` is a perfectly fine default until you hit trouble), but isn't limited to just being applied there.

You can find the official docs here: https://fsprojects.github.io/Paket/

Another thing that might be worth considering for you is Paket. This is an alternative to using nuget, directly, and will take a little bit of setting up (follow their instructions), but once you have it, it will make sure that all dependencies and transitive dependencies for all your projects are the same. Not 100% sure if this would solve the issue for you, and it might be tricky if the realApplication has unknown shared dependencies with the other projects, but you can give it a try.

Check out https://fsprojects.github.io/Paket/ and https://fake.build/ and https://docs.microsoft.com/en-us/dotnet/fsharp/get-started/get-started-vscode for playing with F#.

So I am stuck again when I want to create a web app. Don't laugh. Once again, I come from *NIX environment and the way everything is started in WebSharper is quite confusing at first. I tried to go installation documentation but I don't use Visual Studio nor MonoDevelop. Using paket also doesn't solve my problem since they also seem to use Visual Studio or MonoDevelop.

a bit of follow up: this is because the init command you ran defaulted to those frameworks. it could be smarter, or it could default to something more recent. I opened this PR to update this default.

If this would be true, there would be no reason for something like Paket to exist.

I agree with the author about the slow inner loop experience. Recompiling the whole app to see browser changes gets tiring. The .NET team is planning a series of updates to address this in .NET 6. https://github.com/dotnet/core/issues/5510

I also dislike the default workflow for dealing with Nuget forks. I switched to Paket for dependency management which makes this much simpler. https://fsprojects.github.io/Paket/

Also, I stumbled on this ticket https://github.com/fsprojects/Paket/issues/3064 which seems to confirm my fear that Paket is limited to importing files from Github, not entire packages, but I'm still hoping.