Hi all! 👋 We want to ask you, the community, to help us create materials and advance the community together. As a token of our appreciation, everyone that contributes content will be added to our raffle where you could win exclusive Kotlin swag.

Create materials – articles, videos, and samples – on the following topics and share them with us before November 8.

Here is a list of topics we would like content about: • KMM: ◦ Tips and tricks for working with KMM  ◦ Issues you faced with KMM and how you solved them ◦ Advanced samples using KMM ◦ Cases of using KMM with other platforms with pros and cons • Migration of backend with tech details: ◦ From Java to Kotlin in Spring projects ◦ To Ktor ◦ From non-JVM stacks to any Kotlin backend framework • Libraries: ◦ Your favorite community library and how you use it ◦ A Kotlin API you would like to have in the official libraries and how you “live” without it

In a Slack message, provide your topic, a short description (less than 150 characters), and a link to your article, video, or sample.

🎁 When you submit your article, video, or sample according to the rules above, you will be entered into a raffle. We will randomly choose ten winners who will receive exclusive Kotlin blankets. In addition, we will promote the five most interesting pieces of content on our official Kotlin channels. Don’t miss your chance to get a free promo! Check out the rules for details.

set the channel description: Create materials – articles, videos, and samples – on the following topics and share them with us here before November 8, 2021.

Not sure if this counts - but https://kotlinlang.slack.com/archives/C3PQML5NU/p1626360980327500

Here’s another one I did on sharing resources in KMM https://www.linkedin.com/pulse/sharing-resources-kotlin-multiplatform-moko-resources-isuru-rajapakse

My topic is "Your favorite community library and how you use it". My contribution is an article about Serialization in Kotlin using

kotlinx.serialization

. This article is in Portuguese, because I participate of an Kotlin community for portuguese developers named Kotlinautas. https://dev.to/kotlinautas/serializacao-no-kotlin-28ig

Topic: Cases of using KMM with other platforms with pros and cons Short description: Advocacy for the radically different cross platform approach that comes with KMM versus other mobile cross platform solutions. Native Apps with high code sharing vs. single code base Link: https://dev.to/s2engineers/the-future-of-cross-platform-development-kotlin-multiplatform-35n8

Not sure if it counts because it’s not really “converting from Java to Kotlin with Spring”, but I’ve been doing live coding in Kotlin for a while now. Here’s the playlist of my current “hobby project in Kotlin”: In a recent stream, I talked about why I would recommend using Kotlin for webdev as one of my viewers called it: (it starts at 23012 and goes on until 25805)

KMMT : Kotlin Multiplatform Mobile Template https://github.com/jittya/KMMT KMMT is a KMM based project template designed to simplify the KMM development. It uses a simplified approach that can be shared both in android and iOS easily. Primary objective of this project is to help KMM Developers & promote KMM technology

Topic: Cases of using KMM with other platforms with pros and cons Description: In this article we explore why one should choose KMP over other cross-platform technologies to build scalable, maintainable and high performance apps that deliver native experience to the users. Link: https://mayankmkh.medium.com/kotlin-multiplatform-a-panacea-for-mobile-app-development-c41ffe850d1b

Not sure if this is elligible, but I wrote something a little bit ago about our experiences with KMP and learnings for folks looking into cross-platform solutions Description: What a migration to Kotlin Multiplatform taught Quizlet about the nuances of cross-platform development. Link: https://increment.com/mobile/write-once-run-anywhere/

Topic: Advanced samples using KMM Description:

SwiftUI & Compose UI apps for browsing Cat images.

Sharing Models, Networking, Storage, ViewModels.

Developed on Apple Silicon (with Ktor 2.0 EAP).

Link: https://github.com/MartinRajniak/CatViewerDemo I am also writing a short article about the experience, hopefully I will manage to publish it before the deadline 🤞

I produced a video titled "My Top 10 Missing Kotlin Standard Library Functions & The Power of Extension Functions" for the community K Topic: A Kotlin API you would like to have in the official libraries and how you “live” without it Short description: My top 10 of generally applicable extension functions that are missing from Kotlin as well as the reasons why extension functions are so powerful! Link: 

I gave a talk at DevFest21 in Ismailia City/ Egypt. with GDG-Ismailia about Kotlin Multiplatform Topic: Kotlin Multiplatform Description: introduction to KMP and KMM and how they work and doing a hello world example at the end. Link: Content Language: Arabic. Slides: https://docs.google.com/presentation/d/1xT3R-uldRIHrDvoJKbJkfdfnm6vEWLv_ImTTTxMnxrs/edit?usp=sharing

I have written an article about Kotlinx.serialization 1.3. Covered the major features with sample github code: • Java IO stream-based JSON serialization • Property-level control over default value encoding • Excluding null values from serialization • Custom polymorphic class discriminators https://proandroiddev.com/kotlin-kotlinx-serialization-1-3-e41313dcb4d2

Not sure if this is eligible, but I wrote a KMM QuickStart Guide Description: Getting started with Kotlin Multiplatform Mobile in 30 minutes Link: https://proandroiddev.com/kmm-quickstart-guide-7598527a2ab9

I have created KMM library that helps you with domain modeling with UseCases. It is called Arkitekt KMM Main benefits are: • Delegate work to a background thread • Cancel on re-execution (optional) • Error handling • Auto-cancellation when is the related coroutine scope terminated Link to docs: https://futuredapp.github.io/arkitekt-kmm/ Link to repo: https://github.com/futuredapp/arkitekt-kmm/

I wrote an article on Reflection using Kotlin. The content talks about, 1. What is reflection and what's the use of it 2. How to do basic operations like accessing the functions or properties. Including private properties. 3. How to invoke a function. 4. And more. https://levelup.gitconnected.com/understanding-reflection-using-kotlin-a5874bf63010

Topic: Issues you faced with KMM and how you solved them Description:

First part of series in which I talk about my experience with sharing code with Kotlin Multiplatform.

Link: https://martinrajniak.eu/kotlin%20multiplatform/my-kmm-story-I-introduction/ Might be a stretch but I thought I share it here as well 🙂 Future episodes are in the progress... ⏳

@Ekaterina Volodko [JB] We have a blog post, but I'm waiting for approval from the company if we can publish 😢 Should all be fine, as the content we have presented on Droidcon London this year, is more to get an approval and access to publish on our company Medium. Do you know if we can perhaps extend the deadline for at least a few hours? 😬

Or @Alina Dolgikh [JB]? 😬 (saw you reacting to the posts, sorry)

Topic: Issues and Solutions using KMM in prod Short description: I recently gave a talk at Droidcon London 2021 about our KMM journey, and from the questions I received, I found most people were interested in the 

Issues and Solutions

. I decided to prioritise this point, so people having similar issues can use my insights and perhaps even solve their issues based on our solutions! Link: https://medium.com/clearscore/drivescore-kmm-journey-episode-iii-issues-and-solutions-a83f58234b2

Coming in a little late, but trying anyhow. I will try to post it to YouTube tomorrow. Topic: Converting Your Kotlin JVM Code to KMP Description: At Touchlab, our clients often give us a Kotlin codebase, and ask how to make it make it multiplatform. This might be the way you’re thinking of introducing KMP into your codebase, too. But it can be tricky. In this video, I talk how 3 ways to convert Kotlin JVM code to KMP. We use them all in a simple example.

LATE SUBMISSION! This is an article about JDBC and Kotlin. JDBC stands for Java Database Connectivity. It's a low level library that enables JVM languages to interact with databases. All other libraries for database access are built on top of JDBC. This quick introduction covers, 1. What is a JDBC URL 2. How to execute SQL queries with a JDBC connection 3. How to access the results of the query https://levelup.gitconnected.com/how-to-access-database-with-kotlin-6b86f6680cd7

Late submission as well: It fits this topic:

A Kotlin API you would like to have in the official libraries and how you “live” without it

https://blog.louiscad.com/coroutines-racing-why-and-how

Hi everyone. We want to thank you for participating in our content contribution activity. 👏 👏 👏 We have already contacted winners of plaids – most of them are those who created new content or updated existing content during the event. Gifts should arrive at the end of January–February. We will also promote some materials shared in this channel in our official Kotlin channels, including docs. Follow us not to miss this! Moreover, we want to continue our experience with content contribution and hope that you will help us with this!

We will appreciate if you could share your feedback about this activity – what you liked and what you would improve next time – in a thread to this message!

Thank you again! And stay tuned! 🙂