Codcups

📚 Master Notes Collection

Comprehensive programming notes with animated cards & smooth dark/light mode. Perfect for daily coding.

Filter by language

10+
Languages
50+
Examples
24/7
Free access
Light
Theme
python Notes

Python — Closures & Decorators

PythonAdvanced
Master Python closures and decorators: function factories, state preservation, and pre/post processing.
html Notes

HTML — Elements & Semantics

HTML
Complete guide to semantic HTML5, accessibility, forms, SEO-friendly markup.
css notes

CSS — Grid & Flexbox

CSS
Modern layout: Flexbox alignment, CSS Grid complex layouts, responsive patterns.
java script Notes

JavaScript — Async Patterns

JS
Deep dive: callbacks, promises, async/await, event loop, advanced patterns.
c langauge notes

C — Pointers & Memory

C
Pointer arithmetic, dynamic memory, function pointers, data structures.
cpp Notes

C++ — OOP & STL

C++
Modern C++: OOP, templates, STL containers, smart pointers, RAII.
csharp Notes

C# — .NET & LINQ

C#
Properties, LINQ, async/await, delegates, events, EF Core.
java

Java — OOP & Collections

Java
Classes, inheritance, generics, collections, streams, lambdas.
sql Notes

SQL — Queries & Performance

SQL
JOINs, subqueries, window functions, indexing, optimization.
php Notes

PHP — Web Development

PHP
OOP, PDO, Composer, MVC, Laravel basics, REST APIs.

Weekly Coding Notes

Fresh cheatsheets & challenges