How can I apply a function to a list with non-overlapping window. E.g. $data = \{x_1, x_2, ...., x_n\}$ and we apply f with window size 2 to get $\{f(x_1,x_2), f(x_3, x_4), ...., f(x_{n-1}. x_n)\}$.

I understand that I can partition and use map on the partitioned list. But are there more efficient ways to handle this operation?

  • 1
    $\begingroup$ BlockMap? $\endgroup$ Jul 16 '19 at 15:27
  • 1
    $\begingroup$ Pre-version 10.2, you can do f /@ Partition[Range[10], 2]. $\endgroup$
    – march
    Jul 16 '19 at 17:16
  • $\begingroup$ Yes, that might be as efficient as BlockMap. I was just thinking that there should be a direct implementation. As I see it was only from v 10.2 up. $\endgroup$
    – Al Guy
    Jul 16 '19 at 20:07
data = Range[10];
BlockMap[f, data, 2]

(* {f[{1, 2}], f[{3, 4}], f[{5, 6}], f[{7, 8}], f[{9, 10}]} *)

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