// should be able to set on the output of arrayidx
(def ar [4 5 6])
(def i 2)
(set (arrayidx ar [i]) 99)
(assert {ar[i] == 99})
(= {ar[i]} 1010101)

// series of infix ;-separated expressions should all be evaluated
{ b = 2; d = 4 }
(assert {b+2 == d})