An 82-liner SwiftUI script similar to CodeCows 🐮

Tows.swift

import SwiftUI
import cows // @AlwaysRightInstitute

struct ContentView: View {
  
  @State var searchString  = ""
  @State var matches       = allCows
  @State var selectedCow   : String?
  
  let font = Font(NSFont
    .monospacedSystemFont(ofSize: NSFont.systemFontSize, weight: .regular))
  
  var body: some View {
    NavigationView {
      ScrollView {
        TextField("Search", text: $searchString)
          .textFieldStyle(RoundedBorderTextFieldStyle())
          .padding(8)
          .onChange(of: searchString) { nv in
            matches = nv.isEmpty 
                    ? cows.allCows 
                    : cows.allCows.filter { $0.contains(searchString) }
          }
        Spacer()
      }
      
      ScrollView {
        VStack(spacing: 0) {
          if matches.isEmpty {
            Text("Didn't find cows matching '\(searchString)' 🐮")
              .padding()
              .font(.title)
            Divider()
          }
          
          ForEach(matches.isEmpty ? allCows : matches, id: \.self) { cow in
            Text(verbatim: cow)
              .font(font)
              .onDrag { NSItemProvider(object: cow as NSString ) }
              .padding()
              .background(
                RoundedRectangle(cornerRadius: 16)
                  .strokeBorder()
                  .foregroundColor(.accentColor)
                  .padding(4)
                  .opacity(selectedCow == cow ? 1 : 0)
              )
              .frame(maxWidth: .infinity)
              .contentShape(Rectangle())
              .onTapGesture {
                selectedCow = selectedCow == cow ? nil : cow
              }
          }
        }
      }
      .ignoresSafeArea()
    }
  }
}

@main
struct TestAppApp: App {
  
  init() {
    DispatchQueue.main.async {
      NSApp.setActivationPolicy(.regular)
      NSApp.activate(ignoringOtherApps: true)
      NSApp.windows.first?.makeKeyAndOrderFront(nil)
    }
  }
  
  var body: some Scene {
    WindowGroup {
      ContentView()
        .frame(minWidth: 640, minHeight: 320)
    }
    .windowStyle(HiddenTitleBarWindowStyle())
  }
}

Blog articles for the Gist:

• 🐮 SwiftUI Tools w/ just SwiftPM
• 🐮 SwiftUI Tools w/ VisualStudio Code

It is about writing a SwiftUI app using just Swift Package Manager, no Xcode.