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title: Diff Types (dw::util::Diff)
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product: DataWeave
version: 2.9
---

# Diff Types (dw::util::Diff)

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

<table><colgroup><col> <col> <col></colgroup><thead><tr><th>Type</th><th>Definition</th><th>Description</th></tr></thead><tbody><tr><td><p>Diff</p></td><td><div><div><p><code>type Diff = { matches: Boolean, diffs: Array&lt;Difference&gt; }</code></p></div></div></td><td><div><div><p>Describes the entire difference between two values.</p></div><div><ul><li><p><em>Example with no differences:</em> <code>{ "matches": true, "diffs": [ ] }</code></p></li><li><p><em>Example with differences:</em> <code>{ "matches": true, "diffs": [ "expected": "4", "actual": "2", "path": "(root).a.@.d" ] }</code></p></li></ul></div><div><p>See the <code>diff</code> function for another example.</p></div></div></td></tr><tr><td><p>Difference</p></td><td><div><div><p><code>type Difference = { expected: String, actual: String, path: String }</code></p></div></div></td><td><div><div><p>Describes a single difference between two values at a given structure.</p></div></div></td></tr></tbody></table>