---
title: "init(_:)"
framework: regexbuilder
role: symbol
role_heading: Initializer
path: "regexbuilder/local/init(_:)-75o5i"
---

# init(_:)

Creates an atomic group with the given regex component.

## Declaration

```swift
init(@RegexComponentBuilder _ componentBuilder: () -> some RegexComponent) where Output == Substring
```

## Parameters

- `componentBuilder`: A builder closure that generates a regex component to wrap in an atomic group.