HowToUseGeometryReader.swift

//   --------------------------------------------------------------------------------------
//   How To Use Geometry Reader to Access Device Dimensions in SwiftUI
//   --------------------------------------------------------------------------------------
//   Wrap the view code you wish to measure using the GeometryReader closure.
//   Using "device" will provide the most clarity to measuring device view dimensions.
//   Access the parent view's dimensions using "device.size.width" or "device.size.height"
//   Official Docs:   https://developer.apple.com/documentation/swiftui/geometryreader


import SwiftUI

struct ContentView: View {
    var body: some View {
        GeometryReader { device in
            HStack(spacing: 0) {
                
                Color(.red)
                    .edgesIgnoringSafeArea(.all)
                    //   Accessing parent view (device) dimensions with .frame()
                    .frame(width: device.size.width, height: device.size.height)
                
                Color(.blue)
                    .edgesIgnoringSafeArea(.all)
                    //   Accessing parent view (device) dimensions with .frame()
                    .frame(width: device.size.width, height: device.size.height)
                        
            }
        }
}