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find

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.

find(Array<T>, Any): Array<Number>

Returns indices of the input array (a list) that match a specified elementToFind.

Parameters

Name Description

elements

An array with elements of any type.

elementToFind

Value to find in the input array.

Example

This example finds the index of an element in a string array.

Source

%dw 2.0
output application/json
---
["Bond", "James", "Bond"] find "Bond"

Output

[0,2]

find(String, Regex): Array<Array<Number>>

Returns the indices in the text that match the specified regular expression (regex) followed by the capture groups.

The first element in each resulting sub-array is the index in the text that matches the regex, and the next ones are the capture groups in the regex (if present).

Note: To retrieve parts of the text that match a regex use the scan function.

Parameters

Name Description

text

A string (String type).

matcher

A regular expression for matching characters in the text.

Example

This example finds the beginning and ending indices of words that contain ea

Source

%dw 2.0
output application/json
---
"I heart DataWeave" find /\w*ea\w*(\b)/

Output

[
   [2,7], [8,17]
]

find(String, String): Array<Number>

Lists indices where the specified characters of a string are present.

Parameters

Name Description

text

A source string.

textToFind

The string to find in the source string.

Example

This example lists the indices of "a" found in "aabccdbce".

Source

%dw 2.0
output application/json
---
"aabccdbce" find "a"

Output

[0,1]