DataWeave 2.1 is compatible with Mule 4.1. Standard Support for Mule 4.1 ended on November 2, 2020, and this version of Mule will reach its End of Life on November 2, 2022, when Extended Support ends.

Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted.

MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements.

sum(Array<Number>): Number

Returns the sum of numbers in an array.

Returns 0 if the array is empty and produces an error when non-numeric values are in the array.


This example returns the sum of the values in the input array.


%dw 2.0
output application/json
sum([1, 2, 3])


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