---
title: swiftlang/swift-standard-library-preview
framework: Swift Package Catalog
role: article
path: packages/swiftlang/swift-standard-library-preview
---

# swiftlang/swift-standard-library-preview

The Swift Standard Library Preview package provides access to new functionality

## Included Modules

- [**`SE0270_RangeSet`**](https://github.com/apple/swift-se0270-range-set/):    Operations on noncontiguous subranges of collections,    such as `subranges(where:)` and `moveSubranges(_:to:)`,    as well as the supporting `RangeSet` type. - [**`SE0288_IsPower`**](https://github.com/apple/swift-se0288-is-power/):   Extends `BinaryInteger` with an `isPower(of:)` method that returns whether   an integer is a power of another.

## Usage

To use the umbrella library in a Swift Package Manager project, add the following to your `Package.swift` file's dependencies:

```swift .package(url: "https://github.com/apple/swift-standard-library-preview.git", from: "0.0.1"), ```

Next, add the preview package as a dependency for your target:

```swift .product(name: "StandardLibraryPreview", package: "swift-standard-library-preview"), ```

> **Important:** The Standard Library Preview package is under continuous development, and maintains a major version of `0` to indicate that it is not intended to be source stable. For example, after a submodule's functionality has been included with shipping versions of the Swift standard library for some time, it may be removed from the umbrella library. > > If you require source stability in your project, add the individual submodules instead of the `swift-standard-library-preview` package.

## Contributing

Contributions to the Standard Library Preview package are welcomed and encouraged!

- For help using the standard library preview package or the related submodules,   please [visit the Swift forums][user-forums]. - For issues related to these packages, [file a bug at bugs.swift.org][bugs]. - Changes or additions to the APIs are made through   the [Swift Evolution process][evolution-process].   Please see the [guide for Contributing to Swift][contributing] for information.

[user-forums]: https://forums.swift.org/c/swift-users/ [bugs]: https://bugs.swift.org [evolution-process]: https://github.com/apple/swift-evolution/blob/master/process.md [contributing]: https://swift.org/contributing

## Package Metadata

Repository: swiftlang/swift-standard-library-preview

Default branch: main

README: README.md