SwiftUI Project 5, Day 2

One more day of 100 Days of SwiftUI on the books.

Still not much new in terms of SwiftUI features. I liked the pattern of guard and simple functions returning booleans as validation for the text input. It was definitely cleaner than stuffing the error alert creation into the validation functions.

I also hadn't seen the onCommit: parameter of TextField before, nice to know about that.