Each sandbox runs on IBM Cloud in a Docker container. In addition, both the latest versions of Swift and its standard library are available for you to use.
To get started just launch the sandbox, enter some code into the window on the left, and hit the blue Run button located at the top center. For example, try typing print("Hello Swift!") into the window on the left. After you click Run, Hello Swift! will appear in the results window on the right.
Since the sandbox runs on top of Linux, you can even write Swift code that interacts directly with the system.
IBM's announcement follows Apple's open sourcing of the Swift Programming Language yesterday.
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