sum (): Real

Returns the sum of all elements contained in self if they support the '+' operation.

Expression	Result
Sequence{2.3, 5.2} in c->sum()	7.5
Sequence{2, 4} in c->sum()	6
Sequence{2, '4'} in c->sum()	invalid

The sum operator calculates the total sum of all numeric elements in a collection. It returns the aggregate sum with the same type as the collection elements.

Syntax

collection->sum() : T

Parameters

A collection of numeric values (Integer, Real, or Decimal)

ReturnType

T - The same numeric type as the collection elements:

• Collection of Integers → returns Integer
• Collection of Reals → returns Real
• Collection of Decimals → returns Decimal

Example

Calculate the total value of all orders:

Order.allInstances()->collect(o | o.Total)->sum()

Result:

0