[jankins]

This is my favorite Swift gotcha :D

This bug bit me one time back before remote debugging came out when I was developing an app for a device that plugged into the lightning port. The only way to debug was to send log messages over the network to a log server running on my laptop, and the connected device sent messages to satellites where there was often a 10-minute gap in connectivity. And I couldn’t reproduce it in tests. That took some time to diagnose!

I like to bring this issue up if an interview candidate seems extremely bought in to protocol-driven development. I wouldn’t be surprised if any level of dev wasn’t aware of it, but would be impressed if anybody identified it.