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‎Week4/prep-exercises/1-wallet/ex2-classes.js

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@@ -1,69 +1,5 @@
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import eurosFormatter from './euroFormatter.js';
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/*
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class Wallet {
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#name;
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#cash;
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constructor(name, cash) {
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this.#name = name;
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this.#cash = cash;
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}
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get name() {
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return this.#name;
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}
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deposit(amount) {
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this.#cash += amount;
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}
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withdraw(amount) {
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if (this.#cash - amount < 0) {
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console.log(`Insufficient funds!`);
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return 0;
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}
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this.#cash -= amount;
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return amount;
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}
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transferInto(wallet, amount) {
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console.log(
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`Transferring ${eurosFormatter.format(amount)} from ${this.name} to ${
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wallet.name
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}`
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);
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const withdrawnAmount = this.withdraw(amount);
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wallet.deposit(withdrawnAmount);
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}
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reportBalance() {
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console.log(
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`Name: ${this.name}, balance: ${eurosFormatter.format(this.#cash)}`
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);
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}
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}
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function main() {
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const walletJack = new Wallet('Jack', 100);
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const walletJoe = new Wallet('Joe', 10);
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const walletJane = new Wallet('Jane', 20);
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walletJack.transferInto(walletJoe, 50);
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walletJane.transferInto(walletJoe, 25);
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walletJane.deposit(20);
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walletJane.transferInto(walletJoe, 25);
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walletJack.reportBalance();
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walletJoe.reportBalance();
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walletJane.reportBalance();
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}
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main();
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*/
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class Wallet {
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#name;
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#cash;

‎Week4/prep-exercises/1-wallet/ex3-object.js

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@@ -1,66 +1,5 @@
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import eurosFormatter from './euroFormatter.js';
22

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/*
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function createWallet(name, cash = 0) {
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return {
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_name: name,
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_cash: cash,
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deposit: function (amount) {
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this._cash += amount;
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},
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withdraw: function (amount) {
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if (this._cash - amount < 0) {
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console.log(`Insufficient funds!`);
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return 0;
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}
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this._cash -= amount;
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return amount;
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},
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transferInto: function (wallet, amount) {
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console.log(
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`Transferring ${eurosFormatter.format(amount)} from ${
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this._name
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} to ${wallet.getName()}`
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);
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const withdrawnAmount = this.withdraw(amount);
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wallet.deposit(withdrawnAmount);
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},
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reportBalance: function () {
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console.log(
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`Name: ${this._name}, balance: ${eurosFormatter.format(this._cash)}`
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);
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},
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getName: function () {
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return this._name;
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},
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};
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}
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function main() {
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const walletJack = createWallet('Jack', 100);
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const walletJoe = createWallet('Joe', 10);
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const walletJane = createWallet('Jane', 20);
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walletJack.transferInto(walletJoe, 50);
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walletJane.transferInto(walletJoe, 25);
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walletJane.deposit(20);
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walletJane.transferInto(walletJoe, 25);
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walletJack.reportBalance();
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walletJoe.reportBalance();
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walletJane.reportBalance();
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}
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main();
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*/
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function createWallet(name, cash = 0) {
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return {
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_name: name,

‎Week4/prep-exercises/1-wallet/ex4-object-shared-methods.js

Lines changed: 0 additions & 66 deletions
Original file line numberDiff line numberDiff line change
@@ -1,71 +1,5 @@
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import eurosFormatter from './euroFormatter.js';
22

3-
/*
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function deposit(amount) {
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this._cash += amount;
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}
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function withdraw(amount) {
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if (this._cash - amount < 0) {
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console.log(`Insufficient funds!`);
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return 0;
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}
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this._cash -= amount;
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return amount;
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}
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function transferInto(wallet, amount) {
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console.log(
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`Transferring ${eurosFormatter.format(amount)} from ${
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this._name
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} to ${wallet.getName()}`
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);
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const withdrawnAmount = this.withdraw(amount);
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wallet.deposit(withdrawnAmount);
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}
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function reportBalance() {
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console.log(
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`Name: ${this._name}, balance: ${eurosFormatter.format(this._cash)}`
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);
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}
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function getName() {
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return this._name;
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}
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function createWallet(name, cash = 0) {
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return {
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_name: name,
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_cash: cash,
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deposit,
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withdraw,
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transferInto,
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reportBalance,
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getName,
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};
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}
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function main() {
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const walletJack = createWallet('Jack', 100);
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const walletJoe = createWallet('Joe', 10);
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const walletJane = createWallet('Jane', 20);
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walletJack.transferInto(walletJoe, 50);
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walletJane.transferInto(walletJoe, 25);
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walletJane.deposit(20);
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walletJane.transferInto(walletJoe, 25);
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walletJack.reportBalance();
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walletJoe.reportBalance();
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walletJane.reportBalance();
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}
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main();
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*/
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function deposit(amount) {
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this._cash += amount;
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}

‎Week4/prep-exercises/1-wallet/ex5-prototype.js

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@@ -1,64 +1,5 @@
11
import eurosFormatter from './euroFormatter.js';
22

3-
/*
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function Wallet(name, cash) {
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this._name = name;
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this._cash = cash;
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}
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Wallet.prototype.deposit = function (amount) {
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this._cash += amount;
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};
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Wallet.prototype.withdraw = function (amount) {
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if (this._cash - amount < 0) {
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console.log(`Insufficient funds!`);
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return 0;
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}
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this._cash -= amount;
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return amount;
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};
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Wallet.prototype.transferInto = function (wallet, amount) {
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console.log(
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`Transferring ${eurosFormatter.format(amount)} from ${
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this._name
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} to ${wallet.getName()}`
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);
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const withdrawnAmount = this.withdraw(amount);
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wallet.deposit(withdrawnAmount);
31-
};
32-
33-
Wallet.prototype.reportBalance = function () {
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console.log(
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`Name: ${this._name}, balance: ${eurosFormatter.format(this._cash)}`
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);
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};
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39-
Wallet.prototype.getName = function () {
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return this._name;
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};
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function main() {
44-
const walletJack = new Wallet('Jack', 100);
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const walletJoe = new Wallet('Joe', 10);
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const walletJane = new Wallet('Jane', 20);
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walletJack.transferInto(walletJoe, 50);
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walletJane.transferInto(walletJoe, 25);
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walletJane.deposit(20);
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walletJane.transferInto(walletJoe, 25);
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walletJack.reportBalance();
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walletJoe.reportBalance();
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walletJane.reportBalance();
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}
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main();
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*/
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function Wallet(name, cash) {
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this._name = name;
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this._cash = cash;

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