## Coroutines in Kotlin Andrey.Breslav@JetBrains.com This talk could have been named... • async/await/yield • fibers Suspendable Computations • [stackless] continuations ## Outline • Motivation/Examples Motivation/Examples • Solutions in other languages • Kotlin's Solution – Client code – Library code • Compiling Coroutines • Exception Handling • Appendix. Serializable Coroutines? ## “Legal” • All I’m |---|---|---| |Language restrictions|Use in special contexts 😢|Use anywhere 😢| |Implemented in|C#, Scala, Kotlin, ...|Quasar, Javaflow, ...| |Code transformation|Local (compiler magic) 😢|All over the place 😢|

## React Native ## tutorialspoint SIMPLY EASY LEARNING www.tutorialspoint.com ## About the Tutorial React Native is a JavaScript framework for building native mobile apps. It uses the React framework CORE CONCEPTS ..... 1 1. React Native – Overview ..... 2 2. React Native – Environment Setup ..... 3 3. Basic ReactNative App ..... 15 4. React Native – State ..... 18 Difference between between State and Props ..... 18 5. React Native – Props ..... 22 Container Component ..... 22 Presentational Component ..... 23 6. React Native – Styling ..... 27 Container Component .

## Curve integrate to Cloud Native ## Curve intro - Curve is an distributed storage system • High performance • Easiser operation • Cloud native • Curve is composed of two parts • Curve Block Storage (CurveBS) - CurveBS: a high performance cloud native distributed block storage • Curve File System (CurveFS) • CurveFS: a high performance cloud native file system (Based on CurveBS / S3 compatible Storage) Support|horizontal/vertical scaling, auto config tuning, abnormal detection, schedule tuning| ## Cloud native Feature list • Features for Cluster • Features for CurveBS • Features for CurveFS • Features

## Kubernetes Native DevOps Practice - 王磊 @TenxCloud ## Agenda ## • Our DevOps Expectations ## • Kubernetes Capabilities/Advantages to Build DevOps Solution • Architecture and Features • CRD and operator DevOps under micro-service architecture • Consolidate the consistent events and data, and create k8s native ChatOps tool • Contribute to open source community ![Image](/uploads/documents/2/5/5/6/25560d4

### Kotlin 1.4 Language Features Svetlana Isakova ### Kotlin 1.4 Language Features • SAM conversions for Kotlin classes • Explicit API mode • Trailing comma • Break and continue inside when expressions arguments • New type inference • Unified exception type for null checks ## SAM conversions for Kotlin interfaces ## SAM = Single abstract method interface Action { fun run() } ## SAM conversion runAction(Action action) { action.run(); } Kotlin: runAction { println("I'm Kotlin 1.3") } ## SAM conversion for a Kotlin interface Java: Kotlin: interface Action { fun run() } fun

p1_1.jpg) Kotlin Language Documentation ## Table of Contents Overview ..... 5 Using Kotlin for Server-side Development ..... 5 Using Kotlin for Android Development ..... 7 Kotlin JavaScript Overview Overview ..... 8 Kotlin/Native for Native ..... 9 Coroutines for asynchronous programming and more ..... 11 Multiplatform Programming ..... 12 What's New in Kotlin 1.1 ..... 14 What's What's New in Kotlin 1.2 ..... 23 What's Coming in Kotlin 1.3 ..... 29 Standard library ..... 33 Tooling ..... 35 Getting Started ..... 36 Basic Syntax ..... 36 Idioms ..... 42 Coding Conventions

## A Security Guide for Kotlin Developers  Overview.....1 Kotlin's Security Profile.....2 Most Common Security Attacks Attacks.....3 Top Kotlin Security Risk.....5 OWASP Mobile TOP 10 Mobile Risks.....10 Protect Your Kotlin Programs with Kiuwan.....11 A pragmatic, modern, and statically typed coding language that's essentially a Java alternative, Kotlin offers some key benefits for Java Virtual Machine (JVM) and Android app development while also being interoperable alongside Java. Kotlin language is general purpose

Kotlin Language Documentation ## Table of Contents Overview ..... 7 .Using Kotlin for Server-side Development ..... 7 Using Kotlin for Android Development ..... 9 .Kotlin JavaScript Overview Overview ..... 11 .Kotlin/Native for Native ..... 13 Kotlin for Data Science ..... 15 .Coroutines for asynchronous programming and more ..... 20 Multiplatform Programming ..... 21 What's What's New in Kotlin 1.1 ..... 24 What's New in Kotlin 1.2 ..... 35 What's New in Kotlin 1.3 ..... 44 Standard library ..... 50 Tooling ..... 52 Getting Started ..... 53

1a/p1_1.jpg) Kotlin Language Documentation 1.9.20 ## Table of Contents Kotlin Docs 61 Get started with Kotlin 61 Install Kotlin 61 Create your powerful application with Kotlin 61 Is anything anything missing? 63 Welcome to our tour of Kotlin! 63 Hello world 63 Variables 64 String templates 64 Practice 65 Next step 65 Basic types 65 Practice 66 Next step 67 Collections 67 List What's next? ..... 90 Kotlin Multiplatform ..... 90 Kotlin Multiplatform use cases ..... 91 Code sharing between platforms ..... 91 Get started ..... 92 Kotlin for server side ..... 92

Awesome Native Apps with NativeScript and Angular - Rowdy Rabouw - jfokus 2018 - @rowdyrabouw ## AWESOME NATIVE APPS WITH NATIVESCRIPT AND ANGULAR! ## Rowdy Rabouw Freelance web and app developer → Lead Developer Day Europe Curator nativescript.nl Rowdy Rabouw ## → Superhero movies Formula One Awesome Native Apps with NativeScript and Angular – Rowdy Rabouw – jfokus 2018 – @rowdyrabouw → Display stopped NativeScript → Open source framework for building truly native mobile apps with JavaScript → together with markup (XML/HTML) and CSS → and native code if you want and dare → Cross Platform: one codebase