---
schema_version: "1"
id: 37145d6c7d5d6dd1b4e8c531ee15dbc45a0e5e18e7fe7e0088b622611261e7d9
title: isRegexType
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canonical_url: https://docs.mulesoft.com/dataweave/latest/dw-types-functions-isregextype
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content_type: documentation
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description: MuleSoft Documentation Site
release: "2.13"
latest: true
---
---
product: DataWeave
version: 2.13
is-latest-version: true
---

# isRegexType

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

## isRegexType(t: Type): Boolean

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

_Introduced in DataWeave version 2.3.0._

### Parameters

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

### Example

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

#### Source

```DataWeave
%dw 2.0
import * from dw::core::Types
type ARegex = Regex
output application/json
---
{
   a: isRegexType(ARegex),
   b: isRegexType(Regex),
   c: isRegexType(Boolean),
}
```

#### Output

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