ZetCode

Learn Programming with ZetCode

Accessible tutorials for C#, Go, Python, Java, and JavaScript to help you master coding.

Explore Tutorials

E-books

Advanced PyQt5

Java 2D Games Programming

Tkinter Programming

View All E-books

C# Tutorials

C# LINQ

C# Async/Await

C# SQLite

All C# Tutorials

Python Tutorials

Python Tutorial

Python Requests

PyQt6 Tutorial

All Python Tutorials

Latest Updates

TypeScript Unions - November 12, 2025

Java Type promotions - June 2, 2025

C# KeyValuePair - May 14, 2025

F# Active Patterns - April 3, 2025

Java HttpClient - April 17, 2025

See More Updates

About the Author

Jan Bodnar is a passionate programmer with over 15 years of experience. Since 2007, he has written 1400+ articles and 8 e-books, with 8+ years of teaching expertise.

Last modified November 12, 2025