Added a new shape class instead of UI.

core-kotlin/src/main/kotlin/com/baeldung/operators/Point.kt

@@ -11,4 +11,19 @@ operator fun Point.times(other: Point): Point = Point(x * other.x, y * other.y)
 operator fun Point.div(other: Point): Point = Point(x / other.x, y / other.y)
 operator fun Point.rem(other: Point): Point = Point(x % other.x, y % other.y)
 operator fun Point.times(factor: Int): Point = Point(x * factor, y * factor)
-operator fun Int.times(point: Point): Point = Point(point.x * this, point.y * this)
+operator fun Int.times(point: Point): Point = Point(point.x * this, point.y * this)
+
+class Shape {
+    private val points = mutableListOf<Point>()
+
+    operator fun Point.unaryPlus() {
+        points.add(this)
+    }
+}
+
+fun shape(init: Shape.() -> Unit): Shape {
+    val shape = Shape()
+    shape.init()
+
+    return shape
+}

core-kotlin/src/main/kotlin/com/baeldung/operators/UI.kt

@@ -1,30 +0,0 @@
-interface View
-class TextView(val value: String) : View
-class ImageView(val url: String) : View
-
-class UI {
-    private val views = mutableListOf<View>()
-
-    operator fun String.unaryPlus() {
-        views.add(TextView(this))
-    }
-
-    operator fun View.unaryPlus() {
-        views.add(this)
-    }
-}
-
-fun ui(init: UI.() -> Unit): UI {
-    val ui = UI()
-    ui.init()
-
-    return ui
-}
-
-fun main(args: Array<String>) {
-    val header = ui {
-        +ImageView("http://logo.com")
-        +"Brand name"
-        +"Brand description"
-    }
-}