Missing something with Stream to Enum

[NobbZ]

map_every(enumerable, nth, fun)

map_every(t, non_neg_integer, (element -> any)) :: list

Returns a list of results of invoking fun on every nth item of enumerable, starting with the first element.

So you have to wait another 495 elements after the ellipsis, before you will get a processed item again.

Perhaps you want plain old Enum.map/2 or Stream.map/2 instead?