.NET Conf: Focus on F# notes

Yes this has been sat in my drafts for far too long. I suspect since 2021-07-29

• JavaScript backend
• Supports .NET libs
• Supports LINQ
• Has pipes, is this similar to what we have in bash and unix?
• Prefers type inference.
  • Total opposite of C# which prefers explicit type definition to cut down on run time errors.
  • How to use python type hinting?
  • Carl Meyer - Type-checked Python in the real world - PyCon 2018
  • TypeScript
• Looks like a scripting language.
• F# interactive in VS Code.
• let keyword much like TypeScript.
• I wonder if it will replace TypeScript in some applications.
• F# for Fun and Profit
  • Why use F#?
    • > F# is not cluttered up with coding “noise” such as curly brackets, semicolons and so on.
      • https://fsharpforfunandprofit.com/posts/fvsc-sum-of-squares/
      • Reminds me of what I was saying here: A state of .NET in late 2020 - C# 9
      • Perhaps C# 9 is actually getting lots of ideas from F# however I think there needs to be a clear line between them otherwise you muddy the two languages.
• SAFE Stack
  • ASP.NET + F#
  • Fable compiles F# to JavaScript.
  • React for client.
  • Sharing custom types between server and client.
  • Sharing validation between server and client.
• Alt + enter for dotnet fsi repl run current selection
• Dotnet fsi… where is C# fsi? Integrate csi to dotnet cli #17666
• Haskell vs f#…