Function: sum()
Returns the sum of a set of numbers.
Syntax
sum(list)
Examples
sum([10, 2, 3, 3.3])
Returns the sum of the numbers in list above i.e. 10 + 2 + 3 + 3.3 = 18.3
sum(in.invoiceAmount)
Returns the sum of all invoiceAmount that are returned by pipe in. E.g. if this expression were on an Aggregating Stream the sum would be over all invoices which matched the Pipe Grouping criteria.