InfoQ Homepage Kotlin Content on InfoQ
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Ki is a New, More Flexible Kotlin Interactive Shell
Ki is a new interactive shell for Kotlin that aims to make it easier for developers to do quick experiments with the language and to take advantage of REPL-driven development.
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The Road to Kotlin 1.5
JetBrains has released Kotlin 1.4.30 with new experimental features that are planned to be stable for Kotlin 1.5. Considered the last incremental version of Kotlin 1.4.x, these new features include a new JVM internal representation (IR) compiler backend, support for Java records and sealed interfaces, and configuration cache support for the Kotlin Gradle Plugin.
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Convert Spring Boot Apps to GraalVM with Spring Native Beta
Spring has released Spring Native Beta, a new tool to convert existing Spring Boot applications, written in Java or Kotlin, to GraalVM native images. The goal is to support Spring Boot applications on Spring Native. GraalVM native images are small, optimized and boot quickly. The tradeoffs, however, are longer build times and fewer runtime optimizations compared to the JVM.
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Airbnb Showkase: a Browser for Your JetPack Compose Library
Airbnb Showkase aims to help developers organize, discover, and visualize their Jetpack Compose UI elements by synthesizing a browser activity based on specific code annotations.
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The Resurgence of Functional Programming - Highlights from QCon Plus
The Resurgence of Functional Programming track at QCon Plus featured several experts describing how functional programming makes developing software a joyful experience. They also told why and how object-oriented languages such as C# and Java are evolving by becoming more functional.
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Just AI Launched Open-Source Kotlin-Based Conversational Framework
Just AI Conversational Framework (JAICF) provides a Kotlin-based DSL to enable the creation of conversational user interfaces. JAICF works with popular voice and text conversation platforms as well as different NLU engines. InfoQ has spoken with Just AI’s solution owner, Vitaliy Gorbachev.
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Kotlin 1.4 Brings New Language Features, Improved Compilers and Tools
Kotlin 1.4 focuses on improving performance and tooling. It also contains a number of new language features, including single abstract method (SAM) conversion for interfaces, explicit API mode, and more.
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How Duolingo Migrated its Android App to 100% Kotlin
Across the last two years, Duolingo seamlessly migrated its Java Android app to 100% Kotlin. Among the main benefits this brought, developers improved their productivity and happiness while the Duolingo app became almost null pointer exception (NPE) free. InfoQ has spoken with Duolingo Android and web development leader Art Chaidarun to learn more about their experience.
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NativeScript 6.3, 6.4, 6.5 Releases Add Svelte, WebAssembly, KotlinJS and Performance Improvements
The recent NativeScript 6.3, 6.4, and 6.5 releases add a wide range of new features to their framework for building native mobile apps with TypeScript or JavaScript. Highlights in these releases include performance improvements to CSS parsing and CLI commands, support WebAssembly on Android and Svelte, 3D View Transformations, and experimental KotlinJS Support.
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Yelp Varanus Helps Android Apps Monitor and Limit Network Traffic
Recently open-sourced by Yelp, Varanus is an Android library aiming to prevent apps from inadvertently consuming too much data. Besides monitoring network traffic, Varanus can also shut it off if required.
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Introducing Javalin: a Lightweight Web Framework for Java and Kotlin
Javalin is a lightweight web framework for Java and Kotlin designed to be simple and blocking by default, supporting websockets, HTTP2, and async requests.
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Writing Web Applications in Java - a Study of Alternatives
Developers familiar with the Java Virtual Machine languages and who want to develop web applications without the difficulties of a JavaScript development stack, have an increasing array of alternatives to JavaScript to choose from. The performance penalty vs. native JavaScript web applications is shrinking.
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QCon NY (Jun 24-28): New Talks, a Focus on the Skills That Matter & Why You Should Join Us This Year
In the recent Stack Overflow 9th annual survey of over 90,000 software developers, we learned that non-development work remains a productivity challenge for software managers and leaders. At QCon New York, the conference for senior software developers, we have many sessions to help you learn how others have overcome those challenges.
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Kotlin 1.3.30 Brings Kotlin/Native and KAPT Improvements, and More
JetBrains has released Kotlin 1.3.30. This version is mainly a new bug fix and tooling update for Kotlin 1.3. Kotlin 1.3.30 brings Kotlin/Native and KAPT improvements, support for more operations for unsigned types and arrays, debugging improvements on IntelliJ IDEA, and more.
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Google Adds Android Support for Kotlin 1.3 and Optimizes for Foldable Devices
Google has presented a series of news at the Android Dev Summit, including new features of kotlin 1.3 supported on Android, support for foldable phones, In-app Updates API, improvements on Android Studio, and more.
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Q&A moderated by InfoQ
AOT or JIT: Faster Startup, Faster Code, or Faster Both?
In this webinar, we will navigate the pros and cons of the Just-In-Time (JIT) and Ahead-of-Time (AOT) compilation approaches, explore the tradeoffs between initial performance and overall performance, and examine how you can better architect your Java microservice design.