4 ms·

It still has exceptions- but exceptions are normal. Errors are normal. How would one do : https://fsharpforfunandprofit.com/rop/ https://fsharpforfunandprofit.c

• benrutter 2y ago
  I think monad patterns can work pretty well in python, but my experience is nobody uses them. I wrote a small utility library for exactly that kind of "railway oriented programming" if you're curious about what it'd look like in python: https://github.com/benrutter/ufo-tools https://github.com/benrutter/ufo-tools
  • fire_lake 2y ago
    Without do-notation (computation expressions in F#) it’s hard to see how this can scale.
    • gpderetta 2y ago
      you might be able to wrestle yield to do your bidding.
• meehai 2y ago
  what about this pattern? https://www.inngest.com/blog/python-errors-as-values https://www.inngest.com/blog/python-errors-as-values I tried it once in an sqlite DB connector with some business logic and simply checking stuff like res: DBException | Result = db_handler.some_business_logic() if isinstance(res, DBException): return res # you can also log or even raise if this function isn't returning exceptions as values # guaranteed to be Result type here See here: - https://gitlab.com/meehai/drpciv-flask/-/blob/main/be/db_handler.py?ref_type=heads#L186 https://gitlab.com/meehai/drpciv-flask/-/blob/main/be/db_han... - https://gitlab.com/meehai/drpciv-flask/-/blob/main/be/app.py?ref_type=heads#L69 https://gitlab.com/meehai/drpciv-flask/-/blob/main/be/app.py...