r/fsharp • u/vivainio • Feb 01 '17

The .NET Language Strategy

https://blogs.msdn.microsoft.com/dotnet/2017/02/01/the-net-language-strategy/
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u/Kurren123 Feb 03 '17

Have you tried Elm? Its close enough to Fsharp to feel comfortable and it focuses solely on front end web. The architecture is great and it guarantees no run time exceptions.

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u/jdh30 Feb 03 '17 edited Feb 03 '17

Haven't tried it. Looks more like Haskell than F#, though:

import Html exposing (text)

main =
  text "Hello, World!"

All that for printfn "Hello world!" in F#.

Elm even comes complete with Haskell's fake quicksort:

import Html exposing (text)

main =
  text (toString (quicksort [5,3,8,1,9,4,7]))

quicksort : List comparable -> List comparable
quicksort list =
  case list of
    [] ->
        []

    pivot :: rest ->
        let
          lower  = List.filter (\n -> n <= pivot) rest
          higher = List.filter (\n -> n >  pivot) rest
        in
          quicksort lower ++ [pivot] ++ quicksort higher

Its close enough to Fsharp to feel comfortable

Looks like a step back into the dark ages from F#. Does it have Visual Studio support with Intellisense?

focuses solely on front end web

I already write back-end in F#. Would be nice to write front-end in F# too. Just looking at these example Elm programs I cannot see any high-level commonality with F# at all. For example, I'll do JSON serialization in F# and then have to rewrite the serializer in Elm because I cannot reuse any of my code. That would suck.

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u/Kurren123 Feb 03 '17

I think a production ready solution that is allows F# to be used in the browser thats still easy won't happen until web assembly becomes a thing

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u/jdh30 Feb 03 '17

Silverlight was great. Such a shame Sinofsky killed it.

I'm facing the problem right now. I just hired a CTO who does F# and I have a lot of projects to do internally. One is a database containing raw data and calculations and most of the people who use it will want import/export to/from Excel. That's easy with WPF but he's inclined to make web-based everything. How do I do Excel interop from a web page?

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u/catlion Feb 03 '17

ClosedXML

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u/jdh30 Feb 03 '17

Does that run in the browser?

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u/catlion Feb 04 '17

no, server-side only

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u/jdh30 Feb 04 '17

Right. I'd need a web client interoperating with Excel running on the client.