Kotlin Coroutines Notebooks

A collection of interactive Kotlin notebooks demonstrating coroutines concepts and patterns using JetBrains Kotlin Notebook.

📋 Overview

This repository contains hands-on examples and tutorials for learning Kotlin coroutines through interactive notebooks. Each notebook focuses on specific coroutines concepts with practical, runnable code examples.

📚 Notebooks

Coroutines/

• basics.ipynb - Fundamental coroutine patterns including launch, async/await, structured concurrency, cancellation, and Flow basics
• 101_kotlin_coroutines.ipynb - Comprehensive introduction to Kotlin coroutines
• cancellation_basics.ipynb - Deep dive into coroutine cancellation mechanisms
• exceptions.ipynb - Exception handling patterns in coroutines
• flows.ipynb - Advanced Flow operations and patterns
• supervisor_job_and_scope.ipynb - SupervisorJob and scope management

🚀 Key Topics Covered

• Basic Coroutines: launch, runBlocking, async/await
• Structured Concurrency: coroutineScope, parent-child relationships
• Cancellation: Explicit cancellation, timeouts, cleanup
• Context Switching: withContext, Dispatchers
• Flow: Cold streams, operators, collection
• Exception Handling: Error propagation, structured exception handling
• Supervision: SupervisorJob, fault tolerance

🛠️ Requirements

• JetBrains IntelliJ IDEA or JetBrains DataSpell with Kotlin Notebook support
• Kotlin 1.8+
• kotlinx-coroutines-core 1.8.1+ (automatically managed via @file:DependsOn)

🏃 Getting Started

1. Clone the repository:

   git clone https://github.com/smithjustinn84-netizen/notebooks.git
   cd notebooks

2. Open in JetBrains IDE:

   • Open the project in IntelliJ IDEA or DataSpell
   • Navigate to the Coroutines/ directory
   • Open any .ipynb file to start learning

3. Run the notebooks:

   • Execute cells individually to see coroutines in action
   • Modify examples to experiment with different patterns
   • Dependencies are automatically resolved via @file:DependsOn

📖 Learning Path

For beginners, we recommend following this order:

1. basics.ipynb - Start here for fundamental concepts
2. 101_kotlin_coroutines.ipynb - Comprehensive overview
3. cancellation_basics.ipynb - Understanding cancellation
4. exceptions.ipynb - Error handling patterns
5. flows.ipynb - Reactive streams with Flow
6. supervisor_job_and_scope.ipynb - Advanced scope management

🔧 Interactive Features

Each notebook includes:

• ✅ Runnable code examples with real output
• ✅ Detailed explanations of coroutine concepts
• ✅ Timing measurements to understand concurrency benefits
• ✅ Exception handling demonstrations
• ✅ Best practices and common patterns

🤝 Contributing

Feel free to:

• Add new notebook examples
• Improve existing explanations
• Fix any issues you encounter
• Suggest new coroutines topics to cover

📝 Notes

• All notebooks use runBlocking for demo purposes in a notebook environment
• In production apps, prefer structured concurrency with proper scope management
• Examples include timing measurements to demonstrate concurrent execution
• Dependencies are managed automatically via notebook annotations

🔗 Resources

• Kotlin Coroutines Guide
• kotlinx.coroutines Documentation
• JetBrains Kotlin Notebook Documentation

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Happy Learning! 🎉 Explore the world of asynchronous programming with Kotlin coroutines through these interactive examples.