Unicode Security Considerations:
Why Swift guard Should Be Avoided:
Federico Viticci in an article from 2015: from 2015:
This is not a tutorial, it’s more of a note so I’m going to remember how to do something the next time I stumble again on the problem.
The mac address uniquely identifies your hardware device on the network. At times you might want to change it and assign a custom address. Maybe to test some server component or to simulate a different machine.