---
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id: 990747c2157b2276edf8f60c4382df1cc055aa440d227804847a695f2dc5c5bb
title: isArrayType
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version: current
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content_type: documentation
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description: MuleSoft Documentation Site
release: "2.3"
latest: false
---
---
product: DataWeave
version: 2.3
---

# isArrayType

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

## isArrayType(Type): Boolean

Returns `true` if the input type is the Array type.

_Introduced in DataWeave 2.3.0. Supported by Mule 4.3 and later._

### Parameters

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p>t</p></td><td><p>The type to check.</p></td></tr></tbody></table>

### Example

This example shows how `isArrayType` behaves with different inputs.

#### Source

```DataWeave
%dw 2.0
import * from dw::core::Types
type AType = Array<String>
output application/json
---
{
   a: isArrayType(AType),
   b: isArrayType(Boolean),
}
```

#### Output

```Json
{
  "a": true,
  "b": false
}
```