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getting-started-install-swift-3-macos

Install Swift 3: macOS

To use Swift 3 on macOS, you need to have Xcode 8 installed and selected.

Download

To download Xcode 8, visit Apple Developer Downloads.

Install

After Xcode 8 has downloaded, drag it into your Applications folder and open it. It may take a while to verify the download.

Select

Select Xcode 8 for your Command Line Tools.

Open Xcode 8 and go to Preferences (cmd+,)
Select the Locations tab
Under Command Line Tools choose Xcode 8.0 (xxxxx)

Swift

You can now move on to Install Swift 3