Using the Swift programming language and a learning supplement called Playground.

Learning to use commands, functions, loops, and conditionals…so far. In the shot above I used a loop to execute an if-then-else conditional to move the character up and forward and to toggle on any switches that were set to off (a condition that varied).
Rather addicting. And now on to the Sphero Bolt robot!
BTW, Swift can control the Bolt (at a rather advanced point in the learning curve).