Is it possible to learn the Swift programming language without a Mac or Xcode?
Now there is a simple way to learn Swift free online.
IBM Swift Sandbox has made it possible!!
Why not go to the IBM Swift Sandbox page now?
Simply write your Swift code in the left side of the page and click the Run button.
Immediately you will see the output at the right side.
This web service is with the latest 2.2 version.
Official Swift Online Document
Relative posts (Swift Syntax) on this blog
Apple Releases Swift as Open Source