DataWeave 2.2 is compatible and bundled with Mule 4.2. Standard Support for Mule 4.2 ended on May 2, 2021, and this version of Mule will reach its End of Life on May 2, 2023, 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.

splitWhere(Array<T>, (item: T) -> Boolean): Pair<Array<T>, Array<T>>

Splits an array into two at the first position where the condition is met.

Introduced in DataWeave 2.2.0. Supported by Mule 4.2 and later.


Name Description


The array of elements to split.


The condition (or expression) used to match an element in the array.



%dw 2.0
import * from dw::core::Arrays
output application/json
var users = ["Mariano", "Leandro", "Julian", "Tomo"]
users splitWhere (item) -> item startsWith "Jul"


  "l": [
  "r": [

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