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joinBy

DataWeave 2.2 is compatible and bundled with Mule 4.2. This version of Mule reached its End of Life on May 2, 2023, when Extended Support ended.

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.

joinBy(Array<Any>, String): String

Merges an array into a single string value and uses the provided string as a separator between each item in the list.

Note that joinBy performs the opposite task of splitBy.

Parameters

Name Description

elements

The input array.

separator

A String used to join elements in the list.

Example

This example joins the elements with a hyphen (-).

Source

%dw 2.0
output application/json
---
{ "hyphenate" : ["a","b","c"] joinBy "-" }

Output

{ "hyphenate": "a-b-c" }