Scans through a list of objects, "accumulating" a value over them (may be a straightforward "sum" or some other chained computation). The results will be added to the initial value passed in by "arg" and returned
||(Array) The list of objects to be accumulated over.|
||(Function) An "accumulation function" accepting the signature (object, total, index) where object is the list member, total is the "running total" object (which is the return value form the previous function), and index is the index number.|
||(Object) The initial value for the "running total" object.|
|Object|| The modified
To a Google developer, this would be "reduce", from the "map/reduce" pairing.
In this example, the function
func will add the
elements property of each entry of
list.columns to an initially empty array and return the filled array.