How to use SwiftUI inside Playground

SwiftUIPlayground-code.swift

struct Objcio: View {
    var book: String
    var body: some View {
        Text(book)
    }
}

var objcio = Objcio(book: "Advanced Swift")
objcio.book = "App Architecture"

SwiftUIPlayground-import.swift

import PlaygroundSupport
import SwiftUI

SwiftUIPlayground-liveView.swift

let liveView = UIHostingController(rootView: objcio)
PlaygroundPage.current.liveView = liveView

SwiftUIPlayground.swift

import PlaygroundSupport
import SwiftUI

struct Objcio: View {
    var book: String
    var body: some View {
        Text(book)
    }
}

var objcio = Objcio(book: "Advanced Swift")
objcio.book = "App Architecture"

let liveView = UIHostingController(rootView: objcio)
PlaygroundPage.current.liveView = liveView