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jimminy, I've been bad at committing code
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‎Chapter 6/Accumulator.js‎

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var Westros;
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(function (Westros) {
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(function (Taxation) {
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var TaxCollector = (function () {
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function TaxCollector() {
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}
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TaxCollector.prototype.collect = function (items, value, projection) {
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if (items.length > 1)
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return projection(items[0]) + this.collect(items.slice(1), value, projection);
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return projection(items[0]);
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};
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return TaxCollector;
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})();
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Taxation.TaxCollector = TaxCollector;
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})(Westros.Taxation || (Westros.Taxation = {}));
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var Taxation = Westros.Taxation;
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})(Westros || (Westros = {}));
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var peasants = [{ name: "Jory Cassel", moneyOwed: 11, bankBalance: 50 }, { name: "Vardis Egen", moneyOwed: 15, bankBalance: 20 }];
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var collector = new Westros.Taxation.TaxCollector();
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console.log(collector.collect(peasants, 0, function (item) {
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return Math.min(item.moneyOwed, item.bankBalance);
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}));
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var multiArray = [[1, 2, 3], ["a", "b", "c"]];
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for (var i = 0; i < multiArray.length; i++)
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for (var j = 0; j < multiArray[i].length; j++)
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console.log(multiArray[i][j]);

‎Chapter 6/Accumulator.ts‎

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module Westros.Taxation{
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export class TaxCollector{
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public collect(items, value, projection)
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{
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if(items.length>1)
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return projection(items[0]) + this.collect(items.slice(1), value, projection);
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return projection(items[0]);
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}
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}
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}
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var peasants = [{name: "Jory Cassel", moneyOwed: 11, bankBalance: 50},{name: "Vardis Egen", moneyOwed: 15, bankBalance: 20}];
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var collector = new Westros.Taxation.TaxCollector();
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console.log(collector.collect(peasants, 0, (item) => Math.min(item.moneyOwed, item.bankBalance)));
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var multiArray :any[][]= [[1,2,3], ["a", "b", "c"]];
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for(var i=0; i<multiArray.length; i++)
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for(var j=0; j<multiArray[i].length; j++)
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console.log(multiArray[i][j]);

‎Chapter 6/Filter.js‎

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Array.prototype.where = function (inclusionTest) {
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var results = [];
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for (var i = 0; i < this.length; i++) {
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if (inclusionTest(this[i]))
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results.push(this[i]);
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}
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return results;
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};
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Array.prototype.select = function (projection) {
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var results = [];
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for (var i = 0; i < this.length; i++) {
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results.push(projection(this[i]));
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}
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return results;
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};
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var children = [{ id: 1, Name: "Rob" }, { id: 2, Name: "Sansa" }, { id: 3, Name: "Arya" }, { id: 4, Name: "Brandon" }, { id: 5, Name: "Rickon" }];
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var filteredChildren = children.where(function (x) {
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return x.id % 2 == 0;
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}).select(function (x) {
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return x.Name;
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});
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console.dir(children);
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console.dir(filteredChildren);

‎Chapter 6/Filter.ts‎

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Array.prototype.where=function(inclusionTest){
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var results = [];
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for(var i = 0; i<this.length;i++){
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if(inclusionTest(this[i]))
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results.push(this[i]);
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}
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return results;
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}
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Array.prototype.select=function(projection){
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var results = [];
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for(var i = 0; i<this.length;i++){
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results.push(projection(this[i]));
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}
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return results;
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}
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const children = [{id: 1, Name: "Rob"}, {id: 2, Name: "Sansa"}, {id: 3, Name: "Arya"}, {id: 4, Name: "Brandon"}, {id: 5, Name: "Rickon"}];
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var filteredChildren = children.where(function(x){ return x.id % 2 ==0;}).select(function(x){ return x.Name;});
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console.dir(children);
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console.dir(filteredChildren);

‎Chapter 6/LazyInstantiation.js‎

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var Westros;
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(function (Westros) {
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(function (FoodSuppliers) {
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var Bakery = (function () {
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function Bakery() {
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this.requiredBreads = [];
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}
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Bakery.prototype.orderBreadType = function (breadType) {
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this.requiredBreads.push(breadType);
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};
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Bakery.prototype.pickUpBread = function (breadType) {
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console.log("Picup of bread " + breadType + " requested");
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if (!this.breads) {
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this.createBreads();
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}
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for (var i = 0; i < this.breads.length; i++) {
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if (this.breads[i].breadType == breadType)
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return this.breads[i];
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}
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};
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Bakery.prototype.createBreads = function () {
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this.breads = [];
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for (var i = 0; i < this.requiredBreads.length; i++) {
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this.breads.push(new Bread(this.requiredBreads[i]));
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}
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};
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return Bakery;
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})();
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FoodSuppliers.Bakery = Bakery;
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var Bread = (function () {
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function Bread(breadType) {
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this.breadType = breadType;
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//some complex, time consuming operation
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console.log("Bread " + breadType + " created.");
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}
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return Bread;
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})();
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FoodSuppliers.Bread = Bread;
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})(Westros.FoodSuppliers || (Westros.FoodSuppliers = {}));
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var FoodSuppliers = Westros.FoodSuppliers;
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})(Westros || (Westros = {}));
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var bakery = new Westros.FoodSuppliers.Bakery();
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bakery.orderBreadType("Brioche");
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bakery.orderBreadType("Anadama bread");
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bakery.orderBreadType("Chapati");
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bakery.orderBreadType("Focaccia");
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console.log(bakery.pickUpBread("Brioche").breadType);

‎Chapter 6/LazyInstantiation.ts‎

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module Westros.FoodSuppliers{
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export class Bakery{
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breads: Bread[];
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requiredBreads: string[];
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constructor() {
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this.requiredBreads = [];
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}
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public orderBreadType(breadType: string){
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this.requiredBreads.push(breadType);
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}
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public pickUpBread(breadType: string):Bread{
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console.log("Picup of bread " + breadType + " requested")
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if(!this.breads)
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{
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this.createBreads();
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}
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for(var i=0; i<this.breads.length; i++){
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if(this.breads[i].breadType == breadType)
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return this.breads[i];
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}
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}
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createBreads(){
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this.breads = [];
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for(var i =0; i<this.requiredBreads.length; i++)
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{
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this.breads.push(new Bread(this.requiredBreads[i]));
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}
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}
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}
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export class Bread{
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constructor(public breadType: string){
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//some complex, time consuming operation
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console.log("Bread " + breadType + " created.");
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}
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}
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}
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var bakery = new Westros.FoodSuppliers.Bakery();
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bakery.orderBreadType("Brioche");
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bakery.orderBreadType("Anadama bread");
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bakery.orderBreadType("Chapati");
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bakery.orderBreadType("Focaccia");
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console.log(bakery.pickUpBread("Brioche").breadType);

‎Chapter 6/Memento.js‎

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var Westros;
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(function (Westros) {
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(function (Mathmatics) {
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var Fibonacci = (function () {
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function Fibonacci() {
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this.memorizedValues = [];
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}
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Fibonacci.prototype.NaieveFib = function (n) {
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if (n == 0)
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return 0;
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if (n <= 2)
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return 1;
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return this.NaieveFib(n - 1) + this.NaieveFib(n - 2);
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};
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Fibonacci.prototype.MemetoFib = function (n) {
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if (n == 0)
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return 0;
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if (n <= 2)
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return 1;
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if (!this.memorizedValues[n])
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this.memorizedValues[n] = this.MemetoFib(n - 1) + this.MemetoFib(n - 2);
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return this.memorizedValues[n];
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};
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return Fibonacci;
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})();
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Mathmatics.Fibonacci = Fibonacci;
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})(Westros.Mathmatics || (Westros.Mathmatics = {}));
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var Mathmatics = Westros.Mathmatics;
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})(Westros || (Westros = {}));
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var fib = new Westros.Mathmatics.Fibonacci();
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start = new Date();
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console.log(fib.NaieveFib(140));
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console.log(fib.memorizedValues.length);
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end = new Date();
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console.log(end-start);

‎Chapter 6/Memento.ts‎

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module Westros.Mathmatics {
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export class Fibonacci{
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public NaieveFib(n): number {
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if(n== 0)
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return 0;
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if(n <= 2)
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return 1;
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return this.NaieveFib(n-1) + this.NaieveFib(n-2);
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}
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memorizedValues = [];
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public MemetoFib(n): number {
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if(n== 0)
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return 0;
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if(n <= 2)
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return 1;
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if(!this.memorizedValues[n])
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this.memorizedValues[n] = this.MemetoFib(n-1) + this.MemetoFib(n-2);
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return this.memorizedValues[n];
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}
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}
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}
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var fib = new Westros.Mathmatics.Fibonacci();
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console.log(fib.MemetoFib(50));

‎Chapter 6/Options.js‎

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var Westros;
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(function (Westros) {
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(function (Tourism) {
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var HamiltonianTour = (function () {
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function HamiltonianTour(options) {
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this.options = options;
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}
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HamiltonianTour.prototype.StartTour = function () {
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if (this.options.onTourStart && typeof (this.options.onTourStart) === "function")
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this.options.onTourStart();
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this.VisitAttraction("King's Landing");
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this.VisitAttraction("Winterfell");
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this.VisitAttraction("Mountains of Dorne");
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this.VisitAttraction("Eyrie");
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if (this.options.onTourCompletion && typeof (this.options.onTourCompletion) === "function")
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this.options.onTourCompletion();
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};
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HamiltonianTour.prototype.VisitAttraction = function (AttractionName) {
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if (this.options.onEntryToAttraction && typeof (this.options.onEntryToAttraction) === "function")
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this.options.onEntryToAttraction(AttractionName);
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//do whatever one does in a Attraction
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if (this.options.onExitFromAttraction && typeof (this.options.onExitFromAttraction) === "function")
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this.options.onExitFromAttraction(AttractionName);
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};
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return HamiltonianTour;
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})();
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Tourism.HamiltonianTour = HamiltonianTour;
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var HamiltonianTourOptions = (function () {
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function HamiltonianTourOptions() {
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}
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return HamiltonianTourOptions;
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})();
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Tourism.HamiltonianTourOptions = HamiltonianTourOptions;
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})(Westros.Tourism || (Westros.Tourism = {}));
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var Tourism = Westros.Tourism;
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})(Westros || (Westros = {}));
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var options = new Westros.Tourism.HamiltonianTourOptions();
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options.onTourStart = function () {
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console.log("I love touring!");
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};
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var tour = new Westros.Tourism.HamiltonianTour(options);
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tour.StartTour();

‎Chapter 6/Options.ts‎

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module Westros.Tourism {
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export class HamiltonianTour{
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constructor(public options: HamiltonianTourOptions) {
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}
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public StartTour(){
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if(this.options.onTourStart && typeof(this.options.onTourStart) === "function")
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this.options.onTourStart();
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this.VisitAttraction("King's Landing");
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this.VisitAttraction("Winterfell");
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this.VisitAttraction("Mountains of Dorne");
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this.VisitAttraction("Eyrie");
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if(this.options.onTourCompletion && typeof(this.options.onTourCompletion) === "function")
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this.options.onTourCompletion();
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}
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VisitAttraction(AttractionName){
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if(this.options.onEntryToAttraction && typeof(this.options.onEntryToAttraction) === "function")
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this.options.onEntryToAttraction(AttractionName);
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//do whatever one does in a Attraction
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if(this.options.onExitFromAttraction && typeof(this.options.onExitFromAttraction) === "function")
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this.options.onExitFromAttraction(AttractionName);
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}
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}
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export class HamiltonianTourOptions{
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onTourStart: Function;
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onEntryToAttraction: Function;
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onExitFromAttraction: Function;
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onTourCompletion: Function;
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}
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}
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var options = new Westros.Tourism.HamiltonianTourOptions();
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options.onTourStart = function() { console.log("I love touring!");};
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var tour = new Westros.Tourism.HamiltonianTour(options);
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tour.StartTour();

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