Simple printMessage extension to SwiftUI's View struct

View_printMessage_playground.swift

// from the blog post:  https://geekanddad.wordpress.com/2020/01/23/snippet-swiftui-view-printmessage-extension/

import SwiftUI
import PlaygroundSupport

struct ContentView: View {
  var body: some View {
    VStack {
      TestView(label: "hello", idx: 22)
        .font(.title)
      TestView(label: "hello", idx: 24)
        .foregroundColor(Color.red)
      Spacer()
    }
  }
}

struct TestView: View {
  let label: String
  let idx: Int

  var body: some View {
    Text(label)
      .padding(10)
      .printMessage("\(self.label):", "\(self.idx)")
      // or .printMessage("self.label, self.idx)  // output: hello 22
  }
}

extension View {
  func printMessage(_ msg: Any...,
              separator: String = " ",
              terminator: String = "\n")
            -> some View {
    // Print them out as if not
    // converted to an array.
    for m in msg {
      print(m,
            separator,
            terminator: "")
    }
    print()
    return self
  }
}

PlaygroundPage.current.liveView = UIHostingController(rootView: ContentView())

z_console_output.txt

hello: 22
hello: 24
hello: 22
hello: 24
hello: 22
hello: 24