4 ms·

Discriminated unions is one of those features that everyone talks about, but never gets championed. Wish C# 10 already had this feature. https://github.com/dotn

• throw868788 5y ago
  Maybe try F#? I know it isn't always an option but if you can, especially recently, its been quite productive to work in.
• keithnz 5y ago
  you can actually do them pretty easily in C# without language support anyways. for instance, the F# example from https://fsharpforfunandprofit.com/posts/designing-for-correctness/ https://fsharpforfunandprofit.com/posts/designing-for-correc... can be done in C# like https://gist.github.com/keithn/ceeeed5f7eb567e1b2333747065d10dd https://gist.github.com/keithn/ceeeed5f7eb567e1b2333747065d1... almost similar amount of code, however, no exhaustive checking. Not that I find that to be much of a problem, but it would be nice
  • Smaug123 5y ago
    But who needs sum types when you have the visitor pattern :troll_face: https://blog.ploeh.dk/2018/06/25/visitor-as-a-sum-type/ https://blog.ploeh.dk/2018/06/25/visitor-as-a-sum-type/
    • keithnz 5y ago
      wow.....that is one way to do it.....yes. I would hate to think what a system would look like with many sum types in it