---
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title: Diff (dw::util::Diff)
collection: mulesoft
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locale: en-us
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---
---
product: DataWeave
version: 2.3
---

# Diff (dw::util::Diff)

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

This utility module calculates the difference between two values and returns the list of
differences.

The module is included with Mule runtime. To use it, you must import it to your DataWeave code, for
example, by adding the line `import dw::util::Diff` or `import * from dw::util::Diff` to your
header.

## Functions

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.3/dw-diff-functions-diff">diff</a></p></td><td><p>Returns the structural differences between two values.</p></td></tr></tbody></table>

## Types

- [Diff Types](https://docs.mulesoft.com/dataweave/2.3/dw-diff-types)