joinBy

joinBy(elements: Array<StringCoerceable>, separator: 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" }

joinBy(n: Null, separator: Any): Null

Helper function that enables joinBy to work with a null value.

Introduced in DataWeave version 2.4.0.

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