Alex Does Things Poorly

Alex does a variety of things poorly - swift, data science, datavis, ML, drawing, AR, unity, etc, etc.

20 June 2021

Swift UI Project 1, Day 3

by alex

One more day of 100 Days of SwiftUI done. I suppose this intro stuff will start getting boring, I’ll have to come up with a better way of introducing my blog entries.

Today we reviewed the WeSplit app and did a few challenges. Everything was quite simple and straightforward. I did spend a bit of time trying to get the format stuff described at WWDC this year working with currency, but couldn’t quite figure it out.

Apple showed some sample code like this:

var body: some View {

    TextField("New Person", value; $newAttendee, 
        format: .name(style: .medium))


and I suppose that works because newAttendee is a binding to an instance of PersonNameComponents with supports the FormatInput .name. And I see FormatStyle types in the docs for currencies, and they seem support Ints and Doubles, but when I try to supply TextField a value that’s a binding to a Double, xcode complains.

This is all new stuff and even the updates to SwiftUI By Example for the new material from WWDC21 don’t cover the new formatting in TextField so I guess I’ll have to keep experimenting and looking at the beta docs this week.

tags: swift - swiftui