Hi,
I'm seeking a small & idiomatic function that will take input and ensure
it's wrapped in a list. If nil, I'd like the list to be empty. If the
input is already a list, I don't want to wrap it in another list layer. So:
"hi" => ("hi")
nil => ()
("hi") => ("hi")
(list '("hi")) => (("hi")) ; bad
(apply list "hi") => (\h \i) ; bad
So I've ended up writing the function with a conditional, like so. Is
there a tidier way?
(defn ls [x] (cond (list? x) (apply list x)
(nil? x) '()
:else (list x)))
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