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Comment by bunderbunder | Hacker News Reader

It's almost to the point where the deciding factors in choosing between (C#-style) OOP and (F#-style) FP are:

  - Do you want your data types in one line or 20?
  - Pattern matching, or large concretions of if-statements?
  - Race conditions: Quality problem, or fun puzzle?

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C# has most of the same pattern matching functionality at this point

There's no compiler warning for incomplete matches, and without discriminated unions it's pretty verbose to write pattern-match friendly types

C# has support for most F# features, they're just often awkward to use

You can get a pretty reasonable facsimile using some libraries I made:

Discriminated unions: https://github.com/mcintyre321/OneOf and One line value objects: https://github.com/mcintyre321/ValueOf

I'm constantly impressed by ways people manage to extend C# like this. I'll have to try this out :)

I haven't had a need for ValueOf yet, but OneOf has saved my ass now more times than I can count. Thank you so very much for it!

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