---
title: regularExpression
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nstextcheckingresult/regularexpression
---

# regularExpression

The regular expression of a type checking result.

## Declaration

```swift
@NSCopying var regularExpression: NSRegularExpression? { get }
```

## See Also

### Text Checking Results for Regular Expressions

- [regularExpressionCheckingResult(ranges:count:regularExpression:)](foundation/nstextcheckingresult/regularexpressioncheckingresult(ranges:count:regularexpression:).md)