Programming Resources | Python | Javascript | Artificial Intelligence Updates | Computer Science Courses | AI Books
54.3K subscribers
880 photos
1 video
4 files
334 links
Everything about programming for beginners
* Python programming
* Java programming
* App development
* Machine Learning
* Data Science

Managed by: @love_data
Download Telegram
Top 10 Python Concepts
Variables & Data Types

Understand integers, floats, strings, booleans, lists, tuples, sets, and dictionaries.

Control Flow (if, else, elif)
Write logic-based programs using conditional statements.

Loops (for & while)
Automate tasks and iterate over data efficiently.

Functions
Build reusable code blocks with def, understand parameters, return values, and scope.

List Comprehensions
Create and transform lists concisely:
[x*2 for x in range(10) if x % 2 == 0]

Modules & Packages
Import built-in, third-party, or custom modules to structure your code.

Exception Handling
Handle errors using try, except, finally for robust programs.

Object-Oriented Programming (OOP)
Learn classes, objects, inheritance, encapsulation, and polymorphism.

File Handling
Open, read, write, and manage files using open(), read(), write().

Working with Libraries
Use powerful libraries like:
- NumPy for numerical operations
- Pandas for data analysis
- Matplotlib/Seaborn for visualization
- Requests for API calls
- JSON for data parsing

#python
❀4
Java Roadmap
|
|-- Fundamentals
| |-- Basics of Programming
| | |-- Introduction to Java
| | |-- Java Development Kit (JDK) and Java Runtime Environment (JRE)
| | |-- Setting Up Development Environment (IDE: IntelliJ IDEA, Eclipse, etc.)
| |
| |-- Syntax and Structure
| | |-- Basic Syntax
| | |-- Variables and Data Types
| | |-- Operators and Expressions
|
|-- Control Structures
| |-- Conditional Statements
| | |-- If-Else Statements
| | |-- Switch Case
| |
| |-- Loops
| | |-- For Loop
| | |-- While Loop
| | |-- Do-While Loop
| |
| |-- Exception Handling
| | |-- Try-Catch Block
| | |-- Finally Block
| | |-- Throw and Throws Keywords
|
|-- Object-Oriented Programming (OOP)
| |-- Basics of OOP
| | |-- Classes and Objects
| | |-- Methods and Constructors
| |
| |-- Inheritance
| | |-- Single and Multiple Inheritance
| | |-- Method Overriding
| | |-- Super Keyword
| |
| |-- Polymorphism
| | |-- Method Overloading
| | |-- Runtime Polymorphism
| | |-- Dynamic Method Dispatch
| |
| |-- Encapsulation
| | |-- Access Modifiers (Public, Private, Protected)
| | |-- Getters and Setters
| | |-- Data Hiding
| |
| |-- Abstraction
| | |-- Abstract Classes
| | |-- Interfaces
|
|-- Advanced Java
| |-- Collections Framework
| | |-- List (ArrayList, LinkedList)
| | |-- Set (HashSet, TreeSet)
| | |-- Map (HashMap, TreeMap)
| | |-- Queue (PriorityQueue, LinkedList)
| |
| |-- Concurrency
| | |-- Multithreading (Creating Threads, Thread Lifecycle)
| | |-- Synchronization
| | |-- Concurrency Utilities (Executors Framework, Callable and Future, Locks and Semaphores)
|
|-- Java Standard Libraries
| |-- I/O Streams
| | |-- File Handling (File Class, Reading and Writing Files)
| | |-- Streams (Byte Streams, Character Streams, Buffered Streams)
| |
| |-- Networking
| | |-- Sockets (TCP and UDP, Socket and ServerSocket Classes)
| | |-- URL and HTTP (URL Class, HttpURLConnection)
| |
| |-- JDBC
| | |-- Database Connectivity (JDBC Drivers, Connection, Statement, and ResultSet)
| | |-- PreparedStatement and CallableStatement
|
|-- Java Frameworks
| |-- Spring Framework
| | |-- Spring Core (Dependency Injection, Inversion of Control)
| | |-- Spring MVC (Model-View-Controller Architecture)
| | |-- Spring Boot (Creating Spring Boot Applications, Starters and Auto-Configuration, Actuator)
| |
| |-- Hibernate
| | |-- ORM Basics (Introduction to ORM, Configuration and Mapping)
| | |-- Advanced Hibernate (Caching, Transactions and Concurrency, Criteria API)
|
|-- Web Development with Java
| |-- Java EE (Jakarta EE)
| | |-- Servlets (Lifecycle, Handling HTTP Requests and Responses, Session Management)
| | |-- JavaServer Pages (JSP) (Syntax, Directives, JSTL and Custom Tags, Expression Language)
| |
| |-- RESTful Web Services
| | |-- JAX-RS (Creating RESTful Services, Annotations and HTTP Methods, Consuming RESTful Services)
|
|-- Build Tools and Dependency Management
| |-- Maven
| | |-- Project Object Model (POM), Dependencies, Repositories, Build Lifecycle and Plugins
| |
| |-- Gradle
| | |-- Build Scripts, Dependency Management, Task Automation
|
|-- Testing in Java
| |-- Unit Testing
| | |-- JUnit (Annotations, Assertions, Test Suites and Runners)
| |
| |-- Mockito (Creating Mocks and Spies and Verification)
| |
| |-- Integration Testing
| | |-- Spring Test (Testing Spring Components and WebTestClient)
|
|-- Deployment and DevOps
| |-- Containers and Microservices
| | |-- Docker (Dockerfile, Image Creation, Container Management)
| | |-- Kubernetes (Pods, Services, Deployments, Managing Java Applications on Kubernetes)

Free books and courses to learn JavaπŸ‘‡πŸ‘‡

https://imp.i115008.net/QOz50M

https://bit.ly/3hbu3Dg

https://imp.i115008.net/Jrjo1R

https://bit.ly/3BSHP5S

https://t.iss.one/Java_Programming_Notes

Join @free4unow_backup for more free courses

ENJOY LEARNINGπŸ‘πŸ‘
❀4πŸ‘1
Quick SQL functions cheat sheet for beginners

Aggregate Functions

COUNT(*): Counts rows.

SUM(column): Total sum.

AVG(column): Average value.

MAX(column): Maximum value.

MIN(column): Minimum value.


String Functions

CONCAT(a, b, …): Concatenates strings.

SUBSTRING(s, start, length): Extracts part of a string.

UPPER(s) / LOWER(s): Converts string case.

TRIM(s): Removes leading/trailing spaces.


Date & Time Functions

CURRENT_DATE / CURRENT_TIME / CURRENT_TIMESTAMP: Current date/time.

EXTRACT(unit FROM date): Retrieves a date part (e.g., year, month).

DATE_ADD(date, INTERVAL n unit): Adds an interval to a date.


Numeric Functions

ROUND(num, decimals): Rounds to a specified decimal.

CEIL(num) / FLOOR(num): Rounds up/down.

ABS(num): Absolute value.

MOD(a, b): Returns the remainder.


Control Flow Functions

CASE: Conditional logic.

COALESCE(val1, val2, …): Returns the first non-null value.


Like for more free Cheatsheets ❀️

Share with credits: https://t.iss.one/sqlspecialist

Hope it helps :)

#dataanalytics
❀2πŸ‘2
Let me explain all the major programming languages in detail so you can better understand which one would be the best fit for you starting with Python

Python Programming Roadmap

Python is beginner-friendly, used in web dev, data science, AI, automation, and is often the first choice for programming newbies.

Step 1: Learn the Basics
Time: 1–2 weeks

Variables (name = "John")

Data Types (int, float, string, list, etc.)

Input and Output (input(), print())

Operators (+, -, *, /, %, //)

Indentation and Syntax rules


*Practice Ideas:*

Build a simple calculator

Create a name greeter

Make a temperature converter


Resources :

- w3schools

- freeCodeCamp

Step 2: Control Flow and Loops
Time: 1 week

- If-else conditions

- For loops and while loops

- Loop control: break, continue, pass


Practice Ideas:

- FizzBuzz

- Number guessing game

- Print star patterns


Step 3: Data Structures in Python
Time: 1–2 weeks

- Lists, Tuples, Sets, Dictionaries

- List Methods: append(), remove(), sort()

- Dictionary Methods: get(), keys(), values()


Practice Ideas:

- Create a contact book

- Word frequency counter

- Store student scores in a dictionary


Step 4: Functions
Time: 1 week

- Define functions using def

- Return statements

- Arguments and Parameters (*args, **kwargs)

- Variable Scope


*Practice Ideas:*

- ATM simulator

- Password generator

- Function-based calculator


Step 5: File Handling and Exceptions
Time: 1 week

- Open, read, write files

- Use of with open(...) as f:

- Try-Except blocks


Practice Ideas:

- Log user data to a file

- Read and analyze text files

- Save login data


Step 6: Object-Oriented Programming (OOP)
Time: 1–2 weeks

- Classes and Objects

- The init() constructor

- Inheritance

- Encapsulation


*Practice Ideas* :

- Build a class for a Bank Account

- Design a Library Management System

- Build a Rental System


Step 7: Choose any Specialization Track

a. Data Science & ML
Learn: NumPy, Pandas, Matplotlib, Seaborn, Scikit-learn
Projects: Analyze sales data, build prediction models

b. Web Development
Learn: Flask or Django, HTML, CSS, SQLite/PostgreSQL
Projects: Portfolio site, blog app, task manager

c. Automation/Scripting
Learn: Selenium, PyAutoGUI, os module, shutil
Projects: Auto-login bot, bulk file renamer, web scraper

d. AI & Deep Learning
Learn: TensorFlow, PyTorch, OpenCV
Projects: Image classification, face detection, chatbots

Final Step: Build Projects & Share on GitHub

- Upload code to GitHub

- Start with 2–3 real-world projects

- Create a personal portfolio site


*Use Replit or Jupyter Notebooks for practice*

*Practice daily – consistency matters more than speed*

Here you can find free Python Resources: https://t.iss.one/pythonproz

Credits: https://whatsapp.com/channel/0029VahiFZQ4o7qN54LTzB17

React with β™₯️ if you like my explanation
❀2
Call for papers on AI to AI Journey* conference journal has started!
Prize for the best scientific paper - 1 million roubles!


Selected papers will be published in the scientific journal Doklady Mathematics.

πŸ“– The journal:
β€’  Indexed in the largest bibliographic databases of scientific citations
β€’  Accessible to an international audience and published in the world’s digital libraries

Submit your article by August 20 and get the opportunity not only to publish your research the scientific journal, but also to present it at the AI Journey conference.
Prize for the best article - 1 million roubles!

More detailed information can be found in the Selection Rules -> AI Journey

*AI Journey - a major online conference in the field of AI technologies
❀1
If you want to Excel at Frontend Development and build stunning user interfaces, master these essential skills:

Core Technologies:

β€’ HTML5 & Semantic Tags – Clean and accessible structure
β€’ CSS3 & Preprocessors (SASS, SCSS) – Advanced styling
β€’ JavaScript ES6+ – Arrow functions, Promises, Async/Await

CSS Frameworks & UI Libraries:

β€’ Bootstrap & Tailwind CSS – Speed up styling
β€’ Flexbox & CSS Grid – Modern layout techniques
β€’ Material UI, Ant Design, Chakra UI – Prebuilt UI components

JavaScript Frameworks & Libraries:

β€’ React.js – Component-based UI development
β€’ Vue.js / Angular – Alternative frontend frameworks
β€’ Next.js & Nuxt.js – Server-side rendering (SSR) & static site generation

State Management:

β€’ Redux / Context API (React) – Manage complex state
β€’ Pinia / Vuex (Vue) – Efficient state handling

API Integration & Data Handling:

β€’ Fetch API & Axios – Consume RESTful APIs
β€’ GraphQL & Apollo Client – Query APIs efficiently

Frontend Optimization & Performance:

β€’ Lazy Loading & Code Splitting – Faster load times
β€’ Web Performance Optimization (Lighthouse, Core Web Vitals)

Version Control & Deployment:

β€’ Git & GitHub – Track changes and collaborate
β€’ CI/CD & Hosting – Deploy with Vercel, Netlify, Firebase

Like it if you need a complete tutorial on all these topics! πŸ‘β€οΈ

Web Development Best Resources

Share with credits: https://t.iss.one/webdevcoursefree

ENJOY LEARNING πŸ‘πŸ‘
❀3πŸ₯°1