Question

I’m encountered with this situation:

(fn produce [] '(val0 val1))

;...

(loop [
    arg0 false
    arg1 false
    arg2 false] 

    ;...

)

Is there some sort of unpack function/macro such that you could call

(recur (unpack (produce)) :arg2)

within the loop context? I’m aware that I could just do something like

(recur (nth (produce) 0) (nth (produce) 1) :arg2)

but surely the former solution would be more elegant?

IIRC Common Lisp code can return more than one value, can Clojure too?

Answer 1

Maybe destructuring in the loop bindings themselves will help?

(loop [ [arg0 arg1] [false false] arg2 false] ...

lets you (recur (produce) arg2) in the loop body, with the 2-element sequence returned by produce destructured and bound to arg0 and arg1.