---
title: "init(_:)"
framework: regexbuilder
role: symbol
role_heading: Initializer
path: "regexbuilder/local/init(_:)-7o3al"
---

# init(_:)

Creates an atomic group with the given regex component.

## Declaration

```swift
init<W, C1>(@RegexComponentBuilder _ componentBuilder: () -> some RegexComponent) where Output == (Substring, C1)
```

## Parameters

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