Kotlin Primer 🚀

A comprehensive course to quickly and effectively learn the Kotlin programming language

Welcome to Kotlin Primer! This repository serves as your complete guide to mastering Kotlin, taking you from setup to advanced concepts through carefully structured lessons and practical examples.

📖 About This Course

Kotlin Primer is designed to get you up and running with Kotlin efficiently. This course covers everything from basic syntax to advanced language features, preparing you for real-world Kotlin development across Android, backend, and multiplatform projects.

Why Kotlin?

• 100% Interoperable with Java
• Concise & Expressive - write less code, do more
• Null Safety built into the language
• Multiplatform - Android, JVM, Native, Web
• Modern Language Features - coroutines, extension functions, and more
• Officially supported by Google for Android development

🚀 Getting Started

Prerequisites

• Basic programming knowledge (any language helpful but not required)
• JDK 8 or higher installed
• An IDE (IntelliJ IDEA recommended, Android Studio, or VS Code)

Setup

1. Clone this repository

   git clone https://github.com/karic-kenan/kotlin-primer.git
   cd kotlin-primer

2. Open in your preferred IDE

   • For IntelliJ IDEA: Open the project folder
   • For Android Studio: Import as a new project
   • For VS Code: Install the Kotlin extension

3. Start learning!

   • Visit the 📖 Interactive Documentation
   • Follow the lessons in order or jump to topics of interest
   • Run the examples and experiment with the code
   • Practice with the concepts as you progress

📚 Course Content

The complete course is available in the interactive documentation. Here's what you'll learn:

Introduction and Setup

• Introduction to Kotlin
• Setting up your development environment
• Writing your first Kotlin program
• Working with Kotlin REPL

Kotlin Fundamentals

• Variables, Types, and Operations
• Conditions
• Loops and Ranges

Basic Functions and Control Flow

• Functions (Introduction)
• Returns and Local Returns

Object-Oriented Programming

• Classes (Introduction)
• Inheritance
• Interfaces
• Abstract Classes
• Data Classes
• Annotations
• Anonymous Classes

Introduction to Functional Programming

• Functional Programming (Introduction)
• Anonymous Functions
• Lambda Functions
• Infix Functions

Continuing Functional Programming

• Operator Overloading
• Tail Recursion
• Inline Functions
• Functional Constructs
• High Order Functions
• Composition and Currying

Collections and Data Processing

• Lists
• Sets
• Maps
• Operations
• Sequence operations
• Null Safety

Intermediate OOP

• Delegation
• Enums
• Generics
• Nested and Inner classes
• Single Abstract Method Interfaces

Extension Functions and Properties

• Extension Functions
• Lambda Extensions
• Extension Properties

Advanced Topics and Best Practices

• Null Safety
• Objects and Companion Objects
• Sealed classes and Interfaces

Special Methods and Type Handling

• Typealias
• Value Classes
• Type Erasure
• Casting

Error Handling and Reflection

• Error Handling
• Kotlin Reflection

Kotlin Specific Features

• Tuples
• Scope Functions

Conclusion

• Summary

🚀 Start Learning Now

📖 Documentation

📖 Open Interactive Course Documentation

All course materials are beautifully presented with Docsify, featuring:

• Interactive navigation and search
• Clean, readable formatting
• Code syntax highlighting
• Mobile-friendly design
• Easy topic browsing

🎯 Learning Path

For Beginners

1. Start with Introduction and Setup
2. Master Kotlin Fundamentals
3. Learn Basic Functions and Control Flow
4. Progress through Object-Oriented Programming

For Intermediate Developers

1. Review fundamentals quickly
2. Focus on Functional Programming sections
3. Dive deep into Collections and Data Processing
4. Explore Advanced Topics and Best Practices

For Advanced Users

1. Jump to specific topics of interest
2. Use as a reference for Special Methods and Type Handling
3. Explore Error Handling and Reflection
4. Master Kotlin Specific Features

🎯 Target Audience

This course is perfect for:

• Programming beginners who want to start with a modern language
• Java developers transitioning to Kotlin
• Android developers looking to master Kotlin
• Backend developers exploring JVM alternatives
• Anyone interested in modern, expressive programming

📱 What You'll Build

After completing this course, you'll have the knowledge to build:

• Android applications with modern Kotlin features
• Backend services using Kotlin/JVM
• Console applications and command-line tools
• Multiplatform applications targeting multiple platforms

🤝 Contributing

Found an issue or want to improve the course? Contributions are welcome!

1. Fork the repository
2. Create a feature branch (git checkout -b feature/improvement)
3. Commit your changes (git commit -am 'Add improvement')
4. Push to the branch (git push origin feature/improvement)
5. Create a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙋‍♂️ About the Author

Created by Kenan Karic - passionate about modern software development and education.

• GitHub: @karic-kenan

⭐ Support

If you find this course helpful:

• ⭐ Star this repository
• 🐛 Report issues or suggest improvements
• 📢 Share with others learning Kotlin
• 💬 Provide feedback on the lessons

---

Happy Coding! 🎉

Master Kotlin step by step and unlock the power of modern, multiplatform development.