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Swift Standard Library

Solve complex problems and write high-performance, readable code.

Overview

The Swift standard library defines a base layer of functionality for writing Swift programs, including:

  • Fundamental data types such as Swift/Int, Swift/Double, and Swift/String
  • Common data structures such as Swift/Array, Swift/Dictionary, and Swift/Set
  • Global functions such as Swift/print(_:separator:terminator:) and Swift/abs(_:)
  • Protocols, such as Swift/Collection and Swift/Equatable, that describe common abstractions.
  • Protocols, such as Swift/CustomDebugStringConvertible and Swift/CustomReflectable, that you use to customize operations that are available to all types.
  • Protocols, such as Swift/OptionSet-protocol, that you use to provide implementations that would otherwise require boilerplate code.

Note: Experiment with Swift standard library types and learn high-level concepts using visualizations and practical examples. Learn how the Swift standard library uses protocols and generics to express powerful constraints. Download the playground below to get started.

Swift Standard Library.playground

Topics

Values and Collections

Tools for Your Types

Programming Tasks

Deprecated

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