Close The Platform Gap With The “Bad Swift Simulation”

This session demonstrates the challenges of calling Kotlin APIs from Swift and how to resolve them using tools like SKIE.

Dive into the complexities of Kotlin Multiplatform (KMP) and discover how to bridge the gap between Kotlin and Swift development. Touchlab’s “Bad Swift Simulation” is designed to highlight the real issues faced by Kotlin developers when interacting with Swift, and provide practical solutions to enhance your development workflow. Most Kotlin developers have some familiarity with Swift but lack deep understanding. This lab experience will immerse you in the challenges of calling Kotlin through a Swift-like lens, where you'll gain invaluable insights and learn how to address these issues using SKIE and other tools. What You Will Learn: - Feel Their Pain: Understand the critical issues when Kotlin APIs are used in Swift environments by experiencing them firsthand. - Address the Issues: Use SKIE and other tools to reintroduce modern features, restoring productivity and type safety. - Apply it Intelligently: Learn techniques to incrementally apply SKIE, ensuring minimal disruption to existing codebases. Join us for an in-depth exploration of Kotlin and Swift integration challenges and solutions. Ideal for Kotlin developers, iOS developers, software architects, and technical leads, this event will enhance your understanding and improve your mobile app development workflow with KMP. ✨ Resources: skie.touchlab.co github.com/touchlab/BadSwiftSimulator github.com/touchlab/SKIE github.com/touchlab/xcode-kotlin touchlab.co/close-the-platform-gap touchlab.co/kc-team-codelab touchlab.co/codelabs 📖 Chapters: Introduction to Touchlab Summer Streaming Series 0:00 - Welcome and Introduction by Kevin Galligan Talk by Tadeas and Phillip 1:12 - Introducing Speakers and Topic 2:04 - Kotlin to Swift Interop: Limitations and Solutions Primary Reason for KMP Adoption Issues 2:10 - Technical vs People Problems 2:22 - Hypothetical Scenario Illustrating People Problems Importance of iOS Developer Experience 6:04 - Ensuring iOS Developers Want to Use KMP 6:46 - Improving iOS Developer Experience Debugging and Compilation Challenges 7:03 - Making Kotlin API Friendly to Swift 7:26 - Allowing iOS Developers to Modify Shared Code 9:10 - Issues with Debugging Kotlin Code 9:58 - Compilation Time Optimization Problem with Kotlin API in Swift 11:54 - Explanation of Kotlin and Swift Interop 12:05 - Current State of Kotlin and Swift Interop Simulation and Examples 15:01 - Bat Swift Simulator 15:49 - Enums in Kotlin 16:20 - Sealed Classes and Interfaces 18:01 - Reactor Class Example 20:16 - Coroutines and Suspend Functions 22:03 - Flows 24:45 - Default Arguments 25:56 - Generics Example SKIE: A Tool to Improve Kotlin to Swift Interop 30:04 - Introduction to SKIE 30:40 - SKIE in Action: Enum and Sealed Class Handling 32:08 - Human Readable Descriptions 32:58 - Improved Suspend Functions and Flows 34:06 - Default Arguments with SKIE 35:56 - Handling Generics with SKIE 37:04 - Swift Code Bundling Summary and Closing R