Neato

  • nxdefiant
    link
    fedilink
    arrow-up
    2
    arrow-down
    1
    ·
    2 months ago

    “a = x if foo else y” is a perfectly cromulent statement!

    • FizzyOrange@programming.dev
      link
      fedilink
      arrow-up
      2
      ·
      2 months ago

      It’s not. In functional languages there’s no special case like this. All if-elses are expressions. It’s far superior. For example how do you do this with Python’s if-else expression?

      let x = if foo {
        let y = bar();
        baz();
        y
      } else {
        z
      }
      
      • nxdefiant
        link
        fedilink
        arrow-up
        1
        ·
        2 months ago

        x = foo(y:=bar(), baz(), y) or z should work assuming foo bar and baz are functions being called?

        if this is setting y to the effect of bar() + running baz after, then:

        x = [bar(), baz()][0] or z

        might work

        and if you need y to be defined for later use:

        x = [(y:=bar()), baz()][0] or z

        but thats from memory, not sure if that will even run as written.

        if I get to a real computer I'll try that with an actual if statement instead of a bastardized ternary.
        • FizzyOrange@programming.dev
          link
          fedilink
          arrow-up
          2
          ·
          2 months ago

          foo isn’t a function, it’s a bool. But in any case, as you can see the answer is “with terrible hacks”. Python is not a functional language. It is imperative.

          • nxdefiant
            link
            fedilink
            arrow-up
            2
            arrow-down
            2
            ·
            2 months ago

            Yeah, never said it was, just that if you really want to emulate that style you mostly can.