Array.aggregate()

Array.aggregate (Columns,Function, Params)

Aggregates rows by unique values in column 1, with given function to columns with the parameters specified.

IM(4)

  .fillwith(1..4)
  .aggregate(3,SUM)

gives

1 16

Total of column 3 for each row where first row has a unique value, which in this case is 1.

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4


See Also