ternary opruleator

guber@lemmy.blahaj.zone · 2 days ago

ternary opruleator

MistressRemilia@lemmy.sdf.org · 2 days ago

# I mean, Crystal does have a ternary operator, too...
bar = case something
      in "aaa" then true
      in "bbb" then false
      end

foo = if bar
        69
      else
        42
      end

;; Or CASE or IF or COND or whatever
(let* ((bar (ecase (something)
              (:aaa t)
              (:bbb nil)))
       (foo (if bar 69 42)))
  )

Sv443@sh.itjust.works · edit-2 1 day ago

I’ve been called slurs before for using immediately invoked anonymous function expressions with switch cases in JS

const [val1, val2] = (() => {
  switch(whatever) {
    case "foo": return [1, 2];
    case "bar": return [3, 4];
    default: return [0, 0];
  }
}))();

gandalf_der_12te@lemmy.blahaj.zone · 19 hours ago

const [val1, val2] = ({
  "foo": [1, 2],
  "bar": [3, 4],
})[whatever] || [0, 0];

Sv443@sh.itjust.works · 8 hours ago

🤫

ricecake@sh.itjust.works · 2 days ago

Yeah, the problem isn’t “conditional expressions”, it’s “terse syntax”, and operator rules that you need to just memorize because they’re special and different. Also being limited such that you need to nest the extremely deeply if you, for whatever, you need to have a complex inline condition.

I like the case expression , although I mostly know it from erlang.