takeEveryNth method

Iterable<T> takeEveryNth(
  1. int n
)

keep every nth element of an iterable starting with the first 1,2,3,4,5,6,7,8,9.takeEveryNth(3) -> 1,4,7

Implementation

Iterable<T> takeEveryNth(int n) => whereIndexed((i, _) => i % n == 0);