---
title: pattern
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nsregularexpression/pattern
---

# pattern

Returns the regular expression pattern.

## Declaration

```swift
var pattern: String { get }
```

## See Also

### Related Documentation

- [init(pattern:options:)](foundation/nsregularexpression/init(pattern:options:).md)

### Getting the Regular Expression and Options

- [options](foundation/nsregularexpression/options-swift.property.md)
- [numberOfCaptureGroups](foundation/nsregularexpression/numberofcapturegroups.md)