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Merged
merged 2 commits into from
Sep 21, 2024
Merged

✨ Add typescript solution challenge-23 #102

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32e4a8e
:sparkles: Add typescript solution challenge-23
marcode24 Sep 21, 2024
b42b9d2
:memmo: Update EADME
marcode24 Sep 21, 2024
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85 changes: 85 additions & 0 deletions 2024/23-singleton/solution.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,85 @@
/* eslint-disable max-classes-per-file */
/* eslint-disable no-console */
/* eslint-disable no-constructor-return */

class Singleton {
private static instance: Singleton;
private value: number;

private constructor() {
// Inicializa los atributos del Singleton aquí
this.value = Math.ceil(Math.random() * 1000);
}

static getInstance(): Singleton {
if (!Singleton.instance) {
Singleton.instance = new Singleton();
}
return Singleton.instance;
}

getValue(): number {
return this.value;
}
}

// Prueba del Singleton
const singleton1 = Singleton.getInstance();
const singleton2 = Singleton.getInstance();

console.log(singleton1.getValue()); // Imprime el valor del primer Singleton
console.log(singleton2.getValue()); // Imprime el mismo valor, ya que singleton1 y singleton2 son la misma instancia
console.log(singleton1 === singleton2); // true, ambas variables referencian a la misma instancia

interface User {
id: number;
username: string;
name: string;
email: string;
}

class UserSession {
private static instance: UserSession;
private user: User | null = null; // Usuario no asignado inicialmente

private constructor() {}

static getInstance(): UserSession {
if (!UserSession.instance) {
UserSession.instance = new UserSession();
}
return UserSession.instance;
}

// Asigna un usuario a la sesión
setUser(id: number, username: string, name: string, email: string): void {
this.user = {
id,
username,
name,
email,
};
}

// Recupera los datos del usuario
getUser(): User | null {
return this.user;
}

// Borra los datos de la sesión
clearUser(): void {
this.user = null;
}
}

// Prueba del Singleton en la gestión de sesiones
const session1 = UserSession.getInstance();
session1.setUser(1, "marcode24", "Marco Cruz", "emailTest@gmail.com");

console.log(session1.getUser()); // Imprime el usuario asignado

const session2 = UserSession.getInstance();
console.log(session2.getUser()); // También imprime el usuario asignado, ya que session1 y session2 son la misma instancia

session2.clearUser();
console.log(session1.getUser()); // null, ya que el usuario ha sido borrado en la misma instancia
2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -72,7 +72,7 @@ npm run test 'year'/'folder-name'/solution.test.js
| 20 | [Peticiones HTTP](https://retosdeprogramacion.com/roadmap/) | 🔴 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/20-peticiones-http/index.js) <br /> [![TypeScript](https://img.shields.io/badge/-TypeScript-3178C6?style=flat&logo=typescript&logoColor=white)](./2024/20-peticiones-http/solution.ts) |
| 21 | [Callbacks](https://retosdeprogramacion.com/roadmap/) | 🟡 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/21-callbacks/index.js) <br /> [![TypeScript](https://img.shields.io/badge/-TypeScript-3178C6?style=flat&logo=typescript&logoColor=white)](./2024/21-callbacks/solution.ts) |
| 22 | [Funciones de Orden Superior](https://retosdeprogramacion.com/roadmap/) | 🔴 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/22-funciones-de-orden-superior/index.js) <br /> [![TypeScript](https://img.shields.io/badge/-TypeScript-3178C6?style=flat&logo=typescript&logoColor=white)](./2024/22-funciones-de-orden-superior/solution.ts) |
| 23 | [Patrones de Diseño: Singleton](https://retosdeprogramacion.com/roadmap/) | 🟡 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/23-singleton/index.js) |
| 23 | [Patrones de Diseño: Singleton](https://retosdeprogramacion.com/roadmap/) | 🟡 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/23-singleton/index.js) <br /> [![TypeScript](https://img.shields.io/badge/-TypeScript-3178C6?style=flat&logo=typescript&logoColor=white)](./2024/23-singleton/solution.ts) |
| 24 | [Patrones de Diseño: Decoradores](https://retosdeprogramacion.com/roadmap/) | 🟢 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/24-decoradores/index.js) |
| 25 | [Logs](https://retosdeprogramacion.com/roadmap/) | 🟢 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/25-logs/index.js) |
| 26 | [SOLID: Principio de Responsabilidad Única](https://retosdeprogramacion.com/roadmap/) | 🟡 | [![JavaScript](https://img.shields.io/badge/-JavaScript-F7DF1E?style=flat&logo=javascript&logoColor=black)](./2024/26-solid-srp/index.js) |
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