I would not invest too much time but they are interesting for people not familiar with Swift. I wrote some code to allow access from Swift to the Google drive which required learning lots of new things and I found it quite hard because most of the knowledge is for writing applications for iDevices although Swift is actual available on IBM Mainframes. It appears that Swift is no longer on Colab so you can not try the examples. I build a Swift system on Linux running under VMPlayer on Windows and again lots of learning opportunities. So in summary watch the two videos when you have half a day spare. It also covers Intel assembler if you want another amusement for the dark nights.