((fn/juxt :first :lists/last) [a b c])
((fn/juxt :count :first) [x y])
((fn/juxt :fn/identity :fn/identity) null)
((fn/juxt :fn/identity) false)
((fn/juxt :+ :*))
((fn/juxt :+ :- :*) 8 2)
((fn/juxt :+ :* :+ :*) 1 2 3 4)
((fn/juxt (fn [x] null) (fn [x] false)) a)