Inheritance lessons

Author: nicorithner

typescript-training/05-inheritance/ArrayDriver.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const Shape_1 = require("./Shape");
+const Circle_1 = require("./Circle");
+const Rectangle_1 = require("./Rectangle");
+let myShape = new Shape_1.Shape(10, 15);
+let myCircle = new Circle_1.Circle(5, 10, 20);
+let myRectangle = new Rectangle_1.Rectangle(0, 0, 3, 7);
+// declare an array of shapes ... initially empty
+let theShapes = [];
+// add the shapes to the array
+theShapes.push(myShape);
+theShapes.push(myCircle);
+theShapes.push(myRectangle);
+// theShapes.push("will this work?");
+// theShapes.push(1776) // won't work either because the array only accepts type of
+// the class Shape.
+for (let tempShape of theShapes) {
+    console.log(tempShape.getInfo());
+}

typescript-training/05-inheritance/ArrayDriver.ts

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+import { Shape } from './Shape';
+import { Circle } from './Circle';
+import { Rectangle } from './Rectangle';
+
+let myShape = new Shape(10, 15);
+let myCircle = new Circle(5, 10, 20);
+let myRectangle = new Rectangle(0, 0, 3, 7);
+
+// declare an array of shapes ... initially empty
+let theShapes: Shape[] = [];
+
+// add the shapes to the array
+theShapes.push(myShape);
+theShapes.push(myCircle);
+theShapes.push(myRectangle);
+// theShapes.push("will this work?");
+// theShapes.push(1776) // won't work either because the array only accepts type of
+// the class Shape.
+
+for (let tempShape of theShapes) {
+    console.log(tempShape.getInfo());
+}

typescript-training/05-inheritance/Circle.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Circle = void 0;
+const Shape_1 = require("./Shape");
+class Circle extends Shape_1.Shape {
+    constructor(theX, theY, _radius) {
+        super(theX, theY);
+        this._radius = _radius;
+    }
+    get radius() {
+        return this._radius;
+    }
+    set radius(value) {
+        this._radius = value;
+    }
+    getInfo() {
+        return super.getInfo() + `, radius=${this._radius}`;
+    }
+}
+exports.Circle = Circle;

typescript-training/05-inheritance/Circle.ts

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+import { Shape } from './Shape';
+
+export class Circle extends Shape {
+
+    constructor(theX: number, theY: number,
+                private _radius: number) {
+
+        super(theX, theY);
+    }
+
+    public get radius(): number {
+        return this._radius;
+    }
+
+    public set radius(value: number) {
+        this._radius = value;
+    }
+
+    getInfo(): string {
+        return super.getInfo() + `, radius=${this._radius}`;
+    }
+
+}

typescript-training/05-inheritance/Driver.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const Shape_1 = require("./Shape");
+const Circle_1 = require("./Circle");
+const Rectangle_1 = require("./Rectangle");
+let myShape = new Shape_1.Shape(10, 15);
+console.log(myShape.getInfo());
+let myCircle = new Circle_1.Circle(5, 10, 20);
+console.log(myCircle.getInfo());
+let myRectangle = new Rectangle_1.Rectangle(0, 0, 3, 7);
+console.log(myRectangle.getInfo());

typescript-training/05-inheritance/Driver.ts

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+import { Shape } from './Shape';
+import { Circle } from './Circle';
+import { Rectangle } from './Rectangle';
+
+let myShape = new Shape(10, 15);
+console.log(myShape.getInfo());
+
+let myCircle = new Circle(5, 10, 20);
+console.log(myCircle.getInfo());
+
+let myRectangle = new Rectangle(0, 0, 3, 7);
+console.log(myRectangle.getInfo());

typescript-training/05-inheritance/Rectangle.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Rectangle = void 0;
+const Shape_1 = require("./Shape");
+class Rectangle extends Shape_1.Shape {
+    constructor(theX, theY, _width, _length) {
+        super(theX, theY);
+        this._width = _width;
+        this._length = _length;
+    }
+    get width() {
+        return this._width;
+    }
+    set width(value) {
+        this._width = value;
+    }
+    get length() {
+        return this._length;
+    }
+    set length(value) {
+        this._length = value;
+    }
+    getInfo() {
+        return super.getInfo() + `, width=${this._width}, length=${this._length}`;
+    }
+}
+exports.Rectangle = Rectangle;

typescript-training/05-inheritance/Rectangle.ts

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+import { Shape } from './Shape';
+
+export class Rectangle extends Shape {
+
+    constructor(theX: number, theY: number,
+                private _width: number, private _length: number) {
+
+        super(theX, theY);
+    }
+
+    public get width(): number {
+        return this._width;
+    }
+    
+    public set width(value: number) {
+        this._width = value;
+    }
+
+    public get length(): number {
+        return this._length;
+    }
+
+    public set length(value: number) {
+        this._length = value;
+    }
+
+    getInfo(): string {
+        return super.getInfo() + `, width=${this._width}, length=${this._length}`;
+    }
+
+}

typescript-training/05-inheritance/Shape.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Shape = void 0;
+class Shape {
+    constructor(_x, _y) {
+        this._x = _x;
+        this._y = _y;
+    }
+    get x() {
+        return this._x;
+    }
+    set x(value) {
+        this._x = value;
+    }
+    get y() {
+        return this._y;
+    }
+    set y(value) {
+        this._y = value;
+    }
+    getInfo() {
+        return `x=${this._x}, y=${this._y}`;
+    }
+}
+exports.Shape = Shape;

typescript-training/05-inheritance/Shape.ts

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+export class Shape {
+
+    constructor(private _x: number, private _y: number) {
+    }
+
+    public get x(): number {
+        return this._x;
+    }
+
+    public set x(value: number) {
+        this._x = value;
+    }
+
+    public get y(): number {
+        return this._y;
+    }
+
+    public set y(value: number) {
+        this._y = value;
+    }
+
+    getInfo(): string {
+        return `x=${this._x}, y=${this._y}`;
+    }
+}