macro
boot.janet on line 501, column 1
(eachk x ds & body)
Loop over each key in ds. Returns nil.
(eachk k [1 2 3] (print k))
# prints 0
# prints 1
# prints 2
# for indexed collections indices are printed (eachk k {:a "a val" :b "b val" :c "c val"} (print k))
# prints c
# prints a
# prints b