# Your First iOS & SwiftUI App: An App from Scratch, Episode 21: The Swift Standard Library | raywenderlich.com

**URL:** <https://forums.kodeco.com/t/your-first-ios-swiftui-app-an-app-from-scratch-episode-21-the-swift-standard-library-raywenderlich-com/162507>\
**Category:** 🎓 Courses & Articles\
**Created:** [January 18, 2022, 4:09pm UTC](https://forums.kodeco.com/t/your-first-ios-swiftui-app-an-app-from-scratch-episode-21-the-swift-standard-library-raywenderlich-com/162507 "2022-01-18T16:09:54Z")\
**Posts on this page:** 1\
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**Author:** ![rwenderlich](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/rwenderlich/32/108604_2.png) [@rwenderlich](https://forums.kodeco.com/u/rwenderlich)\
**Post date:** [January 18, 2022, 4:09pm UTC](https://forums.kodeco.com/t/your-first-ios-swiftui-app-an-app-from-scratch-episode-21-the-swift-standard-library-raywenderlich-com/162507/1 "2022-01-18T16:09:54Z")

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Learn about the pre-built data types and functions you can use in your apps to solve a variety of common tasks.

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This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/28797163-your-first-ios-swiftui-app-an-app-from-scratch/lessons/21](https://www.raywenderlich.com/28797163-your-first-ios-swiftui-app-an-app-from-scratch/lessons/21)