---
title: "init(copying:)"
framework: applearchive
role: symbol
role_heading: Initializer
path: "applearchive/archiveheader/fieldkeyset/init(copying:)"
---

# init(copying:)

Creates a copy of the specified field key set.

## Declaration

```swift
init(copying s: ArchiveHeader.FieldKeySet)
```

## Parameters

- `s`: The source field key set.

## See Also

### Creating a Field Key Set

- [init()](applearchive/archiveheader/fieldkeyset/init().md)
- [init(_:)](applearchive/archiveheader/fieldkeyset/init(_:).md)