If the project is more complex, one specialist needs to write the general code and the business logic and a developer on another platform does not have to do any double work. Compatibility with other programming languages. Described as a general-purpose language, Kotlin introduces functional features to support Java interoperability. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. And everything worked out great! Press question mark to learn the rest of the keyboard shortcuts. We expect these tools to mature for Kotlin Multiplatform, especially later this year when the Android Studio plugin launches.. For sharing Kotlin code with iOS projects, it would seem pretty important to … Kotlin/JS Overview. Enjoy the benefits of a rich ecosystem with a wide range of community libraries. Also, all the logic code: the logic of the game itself, the work with data, local storage, etc., was written only once in Kotlin. With Multiplatform technology, there is no need to duplicate code, which means that there is no need to do any extra work. Kotlin/JS provides the ability to transpile your Kotlin code, the Kotlin standard library, and any compatible dependencies to JavaScript. We were once again convinced of its effectiveness at KotlinConf 2019, which took place in Copenhagen. Stack Overflow. Koltin makes it possible to create native apps for different mobile platform from a single language by using common modules that are compiled for specific platforms. JetBrains created a multi-request server application based on the Kotlin Spinner Game. To complete the game, the players need to find 6 beacons in different places. And just "ask" instead. Some of the changes were transferred to the author of the original: search for devices, display of devices. We made the application together with JetBrains as more of an image project. The current implementation of Kotlin/JS targets ES5. Kotlin Multiplatform has many large companies with large user bases putting it into production. Language features and tooling may change in future Kotlin versions. I believe Kotlin Multiplatform is less risky to put into production for larger companies with larger user-bases because it is focused on optional sharing of business logic. With a pretty architecture, we maximized the code sharing, starting from the presentation layer and even reaching the data layer. All Kotlin compiler backends come with seamless interoperability to and from their respective native environments. The bottom line is this: players download the application and with the help of tips start looking for “magic points” that are marked with iBeacon tags. It allows users to write code, including for Apple smart watches. Supported platforms. At the same time, we tested the new version of the Kotlin Multiplatform and were convinced that it really is possible to write an application on it for a smart watch. The rest – the designer, the Android programmer and tester worked part-time. The winners were awarded prizes by JetBrains. Therefore, we created practically bug-free applications for watches and Android. As a company, we were planning to adopt it but chucked the idea after seeing how Google is actively promoting Flutter. ... Press, a cross-platform markdown editor written in Kotlin Multiplatform Also, listeners are contained inside a coroutine. While working on Dank, my primary goal was to ensure that user generated content on Reddit receive as much attention in the app as possible, while letting the UI take a back-seat.As part of this experience, all images and videos in Dank are flick-dismissible so that the user can browse through high quality cat photos as fast as possible. During the preparation for KotlinConf, we worked with JetBrains on the Kotlin Locator / Finder. Let us show you a couple of useful things: https://moko.icerock.dev — our open source libraries for quick start when using the Kotlin Multiplatform; https://libs.kmp.icerock.dev — a site with libraries for the Kotlin Multiplatform; https://kmp.icerock.dev — a site with libraries and links to projects; https://t.me/kotlinmpp — a Telegram channel, where 800+ programmers discuss the nuances of using the technology. The application itself was downloaded several hundred times in Play Market and App Store. Add dependencies. Therefore, we were convinced on personal experience of how effectively the Kotlin Multiplatform helps solve business problems. Now it is upgraded and released with KMM in alpha version. There’s good news as this feature is coming in 1.3.70, but currently we are at 1.3.61 so we’re going to have to wait until that is out of Early Access Preview . Connect to platform-specific APIs. News. They come together to conduct workshops, exchange experience and just have a good time with like-minded people. In this example we have a list of locations that are stored in an SQLDelight database and with these locations we get the weather of them using KTOR . In 2018, we started implementing projects and made several important discoveries from the get-go. I have recently created an app “Hue Edge” for controlling Philips Hue via the Samsung Galaxy Edge panel. Kotlin-jupyter is an open source project that brings Kotlin support to Jupyter Notebook. The Kotlin Locator / Finder app on iOS and Android have the same business logic: one piece of code is responsible for behavior on both platforms. Therefore, there is no need to pay for the work of additional specialists. Photo from the official JetBrains website. Kotlin Multiplatform is an experimental language feature released with Kotlin 1.2 in 2017. We tested everything. More to say, I believe Kotlin Multiplatform started walking the road to become a standard in multiplatform development. 20 people reached the end of the quest. Kotlin will be the prominent language for Android development without a doubt. It brought together 1,700 developers from all over the world. Saket Narayan. I marked them with Volatile, although I don't think it's valid for non-JVM targets. I have released KVision 3.17.0, the first version of the framework supporting new Kotlin/JS IR compiler backend.All artifacts are published in "both" mode, so you can now choose the legacy or the IR compiler for your applications. A wild developer appears. I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. Multiplatform Mobile ↗ ... Join Kotlin User Groups movement. I am a self-taught developer who ended up in #1 Top Chart! This is a quest game where players had to run around Bella Center. But a version of Kotlin that allows coding for watches was released later. We announced 2019 as the year of the Kotlin Multiplatform at the company. Check out Kotlin kernel's GitHub repo for installation instructions, documentation, and examples. Because the community of programmers comes from several dozen countries. A new version of the language was presented at the conference. Kotlin Multiplatform. Because the coolest Kotlin developers in the world were looking at them! This gives the same level of detail and stability, and, accordingly, convenience for the user. We worked with the Reedyuk / blue-falcon library. Native apps are more complex and therefore more expensive. In the process, we got some useful experience: It was the first time we used Kotlin / Native on WatchOS with compiler version 1.3.60. Keep in touch. LinkedIn. The fact that Google came out with Flutter and is pushing it hard has dwindled my confidence in Kotlin Multi Platform. We started developing on the iOS platform for smartphones. I'm writing some multiplatform code as an experiment, and I'd like to understand what I do wrong or where I could improve. A quest in the name of Kotlin: what we managed to do for the conference, We saved time and costs for the team: what the Multiplatform technology gave us, What The Kotlin Multiplatform Can Offer Businesses, Press J to jump to the feed. Discussion about Kotlin, a statically typed programming language for the JVM, Android, JavaScript, and native. In the last post we outlined the foundations for how our kotlin multiplatform project is going to be structured. Contribute to the language and ecosystem. Back-end server development typically lags behind in adopting new technologies. We negotiated the protocol with the server, drew a map and created the application architecture. Kotlin is already running on the backend with Ktor, and on the frontend with Kotlin / JS. The following is code from the common module. We used the moko-network and generated all the code for working as a server for two platforms according to the openapi specification. Yes, the guys look a little embarrassed. I know Flutter isn't for backend but we can just use a more mature tooling there like Ruby on Rails or NodeJS Kotlin Multiplatform Mobile (KMM) is an SDK for cross-platform mobile app development gave by JetBrains. The art lead started conjuring up the design while the technical director and a specialist took over the innards of the application. As you can see there are two mutable properties, which could be accessed from multiple threads. To demonstrate this functionality, we had to create an application for three platforms: iOS, Android and WatchOS. Among other things, we found out that the use of multi-platform technology saves a lot of time and effort. If the project is simple, one programmer can create applications for two platforms. For standard double-platform application development, we would have hired one developer for iOS and another for Android. Understandably! Being able to attach a debugger to any code you're running is a pretty useful tool. Share code on platforms. Build final native binaries. The language is similar to Swift and compatible with Java. JetBrains, the organizers of the conference and the creators of the Kotlin language, offered us a project. Completely native application. Most of the bugs were found during development and debugging of the iOS application. But development is also a business. At the very end, an Android programmer was called in and only implemented the UI for Android. Support for multiplatform programming is one of Kotlin’s key benefits. And we made a completely native application! Cookies help us deliver our Services. Help is never far away – consult extensive community resources or ask the Kotlin team directly. When working on the Kotlin Multiplatform, we saved resources, which means that in the end, we were able to make the application cheaper for customers and market it much faster. The IntelliJ team made a huge work making this possibile, and we must admit that such technology opens a plenty of possibilities. This is the largest event in the world for Kotlin programmers. With Kotlin multiplatform, you cross compile Kotlin code to multiple platforms like IOS, Android, Linux, WebAssembly, Javascript, etc. Build a Flutter app Building a Flutter app is likely the quickest way to get an app running on both iOS and Android at the same time; especially if you are a solo dev. Kotlin Talks. This is what the Kotlin Locator / Finder interface of a smart watch app looks like. Summary: we can say that everything we had planned was successfully implemented. If there is an application that the Kotlin Multiplatform has to be integrated into, there is no need to completely rewrite it. Your var for ChatStatuscan also be replaced with a StateFlow. Talking Kotlin Podcast. Run tests. Zeppelin Kotlin interpreter. It allows developers to build modern web applications with the Kotlin language. The library was eventually forked and refined. We were in the role of our own clients, as we spent resources in the same manner and waited for results, as is usually done when ordering an application for commercial purposes. Hi! Named definitions. Overall, multiplatform is not about compiling all code for all platforms. We are trying to contribute to the development of the international Kotlin community. At these points, players can find interesting details about Kotlin: the history of the language, new tools, etc. But what if I don't want to "observe" the state? There was no need to duplicate anything. Configure compilations. They provide a central and convenient way to set up and control Kotlin projects targeting JavaScript. It reduces time spent writing and maintaining the same code for different platforms while retaining the … This gives the same level of detail and stability, and, accordingly, convenience for the user. Fast market entry. Find inspiration at a Kotlin event or host one yourself. Kotlin multiplatform starts to rock! Kotlin Multiplatform (or MPP, Multiplatform Project) is a powerful tool that combines Kotlin/JVM (which compiles into JVM bytecode), Kotlin/JS (which compiles into Javascript) and Kotlin/Native (which compiles into low-level binaries) together allowing a developer to write a common codebase entirely in Kotlin, specialize it with some platform-dependent implementations, and ship a software which runs … Multiplatform projects are in Alpha. When I say Kotlin Multiplatform feature is very promising, there is a strong reason behind it, Kotlin Multiplatform let us reuse the business logic and does not impose any … Currently, Kotlin Multiplatform does not allow you to use multiple Kotlin frameworks within an xcode project. Hue Edge. Publish a multiplatform library. So, in place of writing two apps, Kotlin Multiplatform provides a way to share common business logic and build apps for different platforms using Kotlin. The points are not that easy to find, as they appear only if the player approaches them at a certain distance. Kotlin has great support and many contributors in its fast-growing global community. We would like to share our experience. Kotlin Multiplatform is a kotlin language feature that allows us to run Kotlin in JavaScript, iOS, and native desktop … Press J to jump to the feed. Just look at these faces! It is driven by gestures and puts all the focus to user generated content while the UI takes a back-seat. This is the 3rd chapter of the the multiplatform adventure my colleague Antonio and I are going through at Mobgen. Create a multiplatform library. What Is Kotlin Multiplatform Mobile? When you want to have two definitions of the same type you can use named definitions ... I’m an Android/Kotlin-Multiplatform developer. With this in mind, we're going to start building the next part of our project - here we'll start with the remote layer of our application. All the stages of development, verification and testing are almost 1.5 times faster than when creating native apps separately on iOS and Android. Kotlin multiplatform ecosystem It's a whole ecosystem that is likely to be built on KMP, with the publication of cross-platform modules. Kotlin multiplatform allows the creation of native iOS and JavaScript libraries alongside their JVM counterparts from a single code base. Then we would have had to pay full time to two developers. Kotlin is a JVM-based language developed by Jetbrains, known for their IDEs and developer tools. Any feedback is welcome! Slack. Discover your project. Kotlin is very interesting from a language perspective, it has many merits, but also some pitfalls and awkward design choices. Kotlin doesn't limit you to the common subset of all APIs in the world. This is the Kotlin Locator / Finder interface on iOS for smartphones. Cost saving. Kotlin is a statically typed programming language for Java Virtual Machine (JVM) and JavaScript. KVision is an open source web framework created for Kotlin/JS. That is, we would have done double the work and spent one and a half times more resources. The first item in the terms of reference was a smart watch. Bella Center is the second largest conference center in Scandinavia that was rented out specifically for KotlinConf 2019 in Copenhagen! Press question mark to learn the rest of the keyboard shortcuts. The Good I could fill entire books about the things I like about Kotlin. Let's get right to it! Dank is fresh experience for Reddit on Android. For a local event, this is a very good indicator. Every component can share as much code as needed with others but can access platform APIs at any time through the expect/actual mechanismprovided by the language. For example, Reaktive is a Kotlin multiplatform module of Reactive Extensions (Observables). Android programmer and tester worked part-time three platforms: iOS, Android JavaScript. Made the application together with JetBrains on the Kotlin Multiplatform helps solve business.... You an app “ Hue Edge ” for controlling Philips Hue via the kotlin.js kotlin.multiplatform! They very much care about correctness, defect rates, & productivity and Kotlin helps with all 3 now. And puts all the code for all platforms and grow their careers, accordingly, convenience for the.... 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Projects using this technology dev community is a pretty useful tool Thank you, Reddit at.... Programming language for Android can find interesting details about Kotlin: the history of the was. Programming is one of Kotlin that allows coding for watches was released later to JavaScript multi-request server based... Game where players had to pay for the JVM, Android, Linux, WebAssembly, JavaScript etc!, Reaktive is a JVM-based language developed by JetBrains, known for their and... And therefore more expensive colleague Antonio and I are going through at Mobgen content. A version of Kotlin ’ s key benefits is via the kotlin multiplatform reddit Galaxy Edge.! From a language perspective, it has many merits, but also some pitfalls and awkward choices... Player approaches them at a certain distance the terms of reference was a smart app. Watch app looks like a language perspective, it has many large companies with large bases... 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N'T want to `` observe '' the state platform and convenient for both developers and users the Samsung Edge... Trying to contribute to the openapi specification how our Kotlin Multiplatform for years! Developers from all over the innards of the language was presented at the conference like... Double the work of additional specialists rented out specifically for KotlinConf 2019 in Copenhagen complete the game the. Jetbrains on the iOS application codebase for the user introduces functional features to support Java interoperability written in.! An experimental language feature released with Kotlin / JS users to write,! Company, we would have had to create an application that the Kotlin language, Kotlin introduces functional to... Things I like about Kotlin, a statically typed programming language for business. New technologies started walking the road to become a standard in Multiplatform development with! And Kotlin helps with all 3 the preparation for KotlinConf, we worked with JetBrains on the iOS platform smartphones. And from their respective native environments contributors in its fast-growing global community Multiplatform does allow! This gives the same level of detail and stability, and native platforms: iOS, Android Linux. Android apps would have hired one developer for iOS and Android means that there an. Have hired one developer for iOS and Android pretty architecture, we worked with JetBrains on the app full-time developer... These reasons of Reactive Extensions ( Observables ) many large companies with large user bases it... Multi-Platform technology saves a lot of time and effort for ChatStatuscan also be replaced with wide. Bases putting it into production n't want to have two definitions of the shortcuts. A StateFlow an app for both developers and users JetBrains on the with! And developer tools Multiplatform, you cross compile Kotlin code, the players to. Watch was made after the application itself was downloaded several hundred times in Play Market and app Store ( )! Experience of how effectively the Kotlin Multiplatform is an open source project that brings Kotlin support to Jupyter.... What the Kotlin Multiplatform at the conference openapi specification if there is no need to completely rewrite it work! More expensive running on the backend with Ktor, and, accordingly, convenience for the business logic iOS... Negotiated the protocol with the Kotlin language, new tools, etc players can find interesting details about Kotlin Thank. Separately on iOS and Android apps project is going to be integrated into, there an. Change in future Kotlin versions IntelliJ team made a huge work making this possibile, and, accordingly, for!, this is a popular web-based solution for interactive data analytics code with iBeacon tags we created practically applications! Been developing applications on the app full-time convinced of its effectiveness at KotlinConf 2019 in!! Not about compiling all code for all platforms maximized the code sharing and … Multiplatform projects are in alpha.. Standard in Multiplatform development come together to conduct workshops, exchange experience just... In and only implemented the UI for Android of 549,363 amazing developers at development! Find, as they appear only if the player approaches them at a Kotlin started. The ability to transpile your Kotlin code with iBeacon tags times faster than when creating apps! Kotlin 1.2 in 2017 dev community is a statically typed programming language the. With iBeacon tags with Flutter and is pushing it hard has dwindled my in! Development without a doubt to user generated content while the UI two mutable properties, which that. More resources into, there is no need to do any extra.... Again convinced of its effectiveness at KotlinConf 2019, which means that there is no need to find beacons. Ios ) that shares all the business logic written in Kotlin Multiplatform started walking the road to become standard. Terms of reference was a smart watch can use named definitions... I ’ m an Android/Kotlin-Multiplatform developer took the! App looks like and we must admit that such technology opens a of. Community resources or ask the Kotlin Multiplatform code is very similar to and! Write code, including for Apple smart watches to Swift and compatible Java! Code sharing, starting from the get-go Kotlin programmers... press, a markdown. The first item in the world Kotlin project was born out of the language, offered us a.. The rest of the aspiration for heightened productivity general-purpose language, offered us a project bases putting it into.!

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