5 Debugging Tips Every Developer Should Know 🐞

1️⃣ Reproduce the bug consistently
2️⃣ Read error messages carefully
3️⃣ Use print/log statements strategically
4️⃣ Break the problem into smaller parts
5️⃣ Use a debugger or breakpoints

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Top 9 websites for practicing algorithms and Data structure.

⛓️ https://www.hackerrank.com/

⛓️ https://leetcode.com/

⛓️ https://www.codewars.com/

⛓️ https://www.hackerearth.com/for-developers

⛓️ https://coderbyte.com/

⛓️ https://www.coursera.org/browse/computer-science/algorithms

⛓️ https://www.codechef.com/

⛓️ https://codeforces.com/

⛓️ https://www.geeksforgeeks.org/

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✅ 🔤 A–Z of Web Development

A – API (Application Programming Interface)
Allows communication between different software systems.

B – Backend
The server-side logic and database operations of a web app.

C – CSS (Cascading Style Sheets)
Used to style and layout HTML elements.

D – DOM (Document Object Model)
Tree structure representation of web pages used by JavaScript.

E – Express.js
Minimal Node.js framework for building backend applications.

F – Frontend
Client-side part users interact with (HTML, CSS, JS).

G – Git
Version control system to track changes in code.

H – Hosting
Making your website or app available online.

I – IDE (Integrated Development Environment)
Software used to write and manage code (e.g., VS Code).

J – JavaScript
Scripting language that adds interactivity to websites.

K – Keywords
Important for SEO and also used in programming languages.

L – Lighthouse
Tool for testing website performance and accessibility.

M – MongoDB
NoSQL database often used in full-stack apps.

N – Node.js
JavaScript runtime for server-side development.

O – OAuth
Protocol for secure authorization and login.

P – PHP
Server-side language used in platforms like WordPress.

Q – Query Parameters
Used in URLs to send data to the server.

R – React
JavaScript library for building user interfaces.

S – SEO (Search Engine Optimization)
Improving site visibility on search engines.

T – TypeScript
A superset of JavaScript with static typing.

U – UI (User Interface)
Visual part of an app that users interact with.

V – Vue.js
Progressive JavaScript framework for building UIs.

W – Webpack
Module bundler for optimizing web assets.

X – XML
Markup language used for data sharing and transport.

Y – Yarn
JavaScript package manager alternative to npm.

Z – Z-index
CSS property to control element stacking on the page.

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🚨 Google quietly enabled AI features in Gmail - without prior notice

If you use Gmail, Chat, or Meet, check your settings. Google automatically enabled "smart features" and personalization, which analyze your content and actions for AI functionality (including Gemini).

📌 This means:
Emails, chats, events, files, everything can be used to generate suggestions, drafts, and recommendations.

The features are enabled by default, even if you did not manually activate them.

This can lead to sensitive information leaks, especially in work accounts.

🛡 How to disable:
1. Open Gmail → 🔩 Settings → "See all settings"
2. "General" tab → find the "Smart features" section
3. Uncheck the boxes and press "Disable and reload"

🔒 Protect your correspondence. Don’t let AI read what it shouldn’t.

Post by @Mr_NeophyteX

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✅ CRUD Operations in Back-End Development 🛠📦

Now that you’ve built a basic server, let’s take it a step further by adding full CRUD functionality — the foundation of most web apps.

🔁 What is CRUD?

CRUD stands for:

⦁ C reate → Add new data (e.g., new user)
⦁ R ead → Get existing data (e.g., list users)
⦁ U pdate → Modify existing data (e.g., change user name)
⦁ D elete → Remove data (e.g., delete user)

These are the 4 basic operations every back-end should support.

🧪 Let’s Build a CRUD API

We’ll use the same setup as before (Node.js + Express) and simulate a database with an in-memory array.

Step 1: Setup Project (if not already)

npm init -y
npm install express

Step 2: Create server.js

const express = require('express');
const app = express();
const port = 3000;

app.use(express.json()); // Middleware to parse JSON

let users = [
  { id: 1, name: 'Alice'},
  { id: 2, name: 'Bob'}
];

// READ - Get all users
app.get('/users', (req, res) => {
  res.json(users);
});

// CREATE - Add a new user
app.post('/users', (req, res) => {
  const newUser = {
    id: users.length + 1,
    name: req.body.name
  };
  users.push(newUser);
  res.status(201).json(newUser);
});

// UPDATE - Modify a user
app.put('/users/:id', (req, res) => {
  const userId = parseInt(req.params.id);
  const user = users.find(u => u.id === userId);
  if (!user) return res.status(404).send('User not found');
  user.name = req.body.name;
  res.json(user);
});

// DELETE - Remove a user
app.delete('/users/:id', (req, res) => {
  const userId = parseInt(req.params.id);
  users = users.filter(u => u.id!== userId);
  res.sendStatus(204);
});

app.listen(port, () => {
  console.log(`CRUD API running at http://localhost:${port}`);
});

Step 3: Test Your API

Use tools like Postman or cURL to test:

⦁ GET /users → List users
⦁ POST /users → Add user { "name": "Charlie"}
⦁ PUT /users/1 → Update user 1’s name
⦁ DELETE /users/2 → Delete user 2

🎯 Why This Matters

⦁ CRUD is the backbone of dynamic apps like blogs, e-commerce, social media, and more
⦁ Once you master CRUD, you can connect your app to a real database and build full-stack apps

Next Steps

⦁ Add validation (e.g., check if name is empty)
⦁ Connect to MongoDB or PostgreSQL
⦁ Add authentication (JWT, sessions)
⦁ Deploy your app to the cloud

💡 Pro Tip: Try building a Notes app or a Product Inventory system using CRUD!

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7 Ways to improve API Performance

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🚨 6 free online courses by Harvard University, in ML, AI, and Data Science.

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𝐂𝐨𝐦𝐩𝐮𝐭𝐞𝐫 𝐒𝐜𝐢𝐞𝐧𝐜𝐞 𝐟𝐨𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐏𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥𝐬
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🔗 Link

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✅ How to Build Your First Web Development Project 💻🌐

1️⃣ Choose Your Project Idea
Pick a simple, useful project:
- Personal Portfolio Website
- To-Do List App
- Blog Platform
- Weather App

2️⃣ Learn Basic Technologies
- HTML for structure
- CSS for styling
- JavaScript for interactivity

3️⃣ Set Up Your Development Environment
- Use code editors like VS Code
- Install browser developer tools

4️⃣ Build the Frontend
- Create pages with HTML
- Style with CSS (Flexbox, Grid)
- Add dynamic features using JavaScript (event listeners, DOM manipulation)

5️⃣ Add Functionality
- Use JavaScript for form validation, API calls
- Fetch data from public APIs (weather, news) to display dynamic content

6️⃣ Learn Version Control
- Use Git to track your code changes
- Push projects to GitHub to showcase your work

7️⃣ Explore Backend Basics (optional for beginners)
- Learn Node.js + Express to build simple servers
- Connect with databases like MongoDB or SQLite

8️⃣ Deploy Your Project
- Use free hosting platforms like GitHub Pages, Netlify, or Vercel
- Share your live project link with others

9️⃣ Document Your Work
- Write README files explaining your project
- Include instructions to run or test it

Example Project: To-Do List App
- Build HTML form to add tasks
- Use JavaScript to display, edit, and delete tasks
- Store tasks in browser localStorage

🎯 Pro Tip: Focus on small projects. Build consistently and learn by doing.

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Free 100% Off Microsoft Certifications 🥳🔥

https://aka.ms/fabricdatadays?

RULES

Request Voucher before December 5, Redeem Before 15 December and Give Exam Before 30 December.

Get Free 100% Off on

DP-600: Implementing Analytics Solutions Using Microsoft Fabric

DP-700: Designing and Implementing Data Analytics Solutions

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PL-300: Microsoft Power BI Data Analyst

DP-900: Microsoft Azure Data Fundamentals

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ENJOY ❤️

Create a telegram bot to scan IP/host/websites (enter the IP and get the fastest open port report)

NOTE: This post serves as a demonstration for creating a Python application. I do not endorse spamming or violating the terms or services of any individuals.

Create Telegram bot Scan.py:

⚡️ First, install the necessary libraries:

$ pip install python-telegram-bot==13.7

$ pip install python-nmap

⚡️ Create a file Filename.py
⚡️ Go to BotFather and create a new Telegram Bot
⚡️ Save the script as Filename.py Source

import telegram
from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
import nmap

bot = telegram.Bot(token='8371237947:Aeo3bq8qEJP2kipYIPC_JhwFOIGk5bU')
updater = Updater('8371237947:Aeo3bq8qEJP2kipYIPC_JhwFOIGk5bU', use_context=True)
dispatcher = updater.dispatcher

nm = nmap.PortScanner()

def start(update, context):
context.bot.send_message(chat_id=update.effective_chat.id, text="Welcome there ! Please pass the IP or Host.")

def scan(update, context):
try:
target = update.message.text
nm.scan(hosts=target, arguments='-T4 -F')

scan_result = ''
for host in nm.all_hosts():
scan_result += f"Host: {host}\n"
for proto in nm[host].all_protocols():
ports = nm[host][proto].keys()
for port in ports:
port_info = nm[host][proto][port]
scan_result += f"Port: {port} State: {port_info['state']} Service: {port_info['name']}"
if 'product' in port_info:
scan_result += f", Version: {port_info['product']}"
scan_result += "\n"

context.bot.send_message(chat_id=update.effective_chat.id, text=scan_result)
except Exception as e:
context.bot.send_message(chat_id=update.effective_chat.id, text=f"Error: {str(e)}")

start_handler = CommandHandler('start', start)
dispatcher.add_handler(start_handler)

message_handler = MessageHandler(Filters.text & ~Filters.command, scan)
dispatcher.add_handler(message_handler)

updater.start_polling()
updater.idle()

⚡️ Execute the 'Scan.py' script, and visit your Telegram bot, type '/start' to receive the welcome message.
⚡️ Pass the IP/host and get open ports, service and versions.

#nmap @NxSMind #python_Telegram_Bot

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