macro
boot.janet on line 608 , column 1
(eachk binding x & body )
Loop over each key in `x` with each key bound to `binding` with
destructuring support. Returns `nil` .
`x` can be a bytes , indexed , dictionary , fiber , or abstract type
with a suitable `next` method.
(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