Apple's new Swift Playground App allows Swift coding on iPad ...June 13, 2016 | Stefan Mischook
Just watching the WWDC, and Apple has a new app coming out that will allow students to learn Swift on the iPad. They've solved the keyboard issue as well - now you have direct access to keys / characters used for coding.
... Should be out fall 2016.
This is news because prior to this, you could only do Swift coding with Xcode which does not run on iPad.