struct Binomial: Codable {
    var genus: String
    var species: String
    var subspecies: String?
}

let tree = Binomial(genus: "Pin", species: "oak")
let jsonData = try JSONEncoder().encode(tree)

// {"genus":"Pin","species":"oak"}

struct ScientificName {
    var genus: String
    var species: String
    var subspecies: String?

    var description: String {
        var text = "\(genus) \(species)"
        if let subspecies {
            // subspecies guaranteed to be non-nil
            text += "subsp. \(subspecies)"
        }
        return text
    }
}

let hello = "Hello, world!"
let multilineString = """
                  @@@
      @@          @@@@
    @@  @@@         @@@@@
    @@@@@@@@@       @@@@@
      @@@@@@@@@@    @@@@@@
        @@@@@@@@@@  @@@@@@
          @@@@@@@@@@@@@@@@@
@           @@@@@@@@@@@@@@@
@@@@@@        @@@@@@@@@@@@@
  @@@@@@@@@@@@@@@@@@@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@
        @@@@@@@@@@@@@     @
                      \(hello)
"""

Use Cases

• Apple Platforms

  Swift is a powerful and intuitive programming language optimized when running on iOS, macOS, and other Apple platforms.
  
  Apple offers a wide variety of frameworks and APIs that make applications developed for these platforms unique and fun.

  Learn more

• Cross-platform Command-line

  Writing Swift is interactive and fun, the syntax is concise yet expressive. Swift code is safe by design and produces software that runs lightning-fast.
  
  SwiftArgumentParser and Swift's growing package ecosystem make developing cross-platform command-line tools a breeze.

  Learn more

• Server and Networking

  Swift's small memory footprint, quick startup time, and deterministic performance make it a great choice for server and other networked applications.
  
  SwiftNIO and Swift's dynamic server ecosystem bring joy to developing networked applications.

  Learn more

Getting Involved

Everyone is welcome to contribute to Swift. Contributing doesn’t just mean writing code or submitting pull request — there are many different ways for you to get involved, including answering questions on the forums, reporting or triaging bugs, and participating in the Swift evolution process.

No matter how you want to get involved, we ask that you first learn what’s expected of anyone who participates in the project by reading the Community Overview. If you’re contributing code, you should also know how to build and run Swift from the repository, as described in Source Code.

• Design

  Help shape the future of Swift by participating in the Swift evolution process.

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• Code

  Contribute to the Swift compiler, standard library, and other core components of the project.

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• Troubleshoot

  Help improve the quality of Swift by reporting and triaging bugs.

  Learn more

What’s New

Stay up-to-date with the latest in the Swift community.