Kotlin Development & Applications

Kotlin has already been on the scene for ten years. Since its conception, it’s been changing the way people work, both at JetBrains and beyond. But what lies in store for Kotlin in the next decade? Together with Roman Elizarov, we’ve gazed into the future, and we’ve collected our insights for you !

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Continue ReadingKotlin has already been on the scene for ten years. Since its conception, it’s been changing the way people work, both at JetBrains and beyond. But what lies in store for Kotlin in the next decade? Together with Roman Elizarov, we’ve gazed into the future, and we’ve collected our insights for you !

Monthly News: Kotlin 1.7.20 Beta, KotlinConf Workshops, New Webinar, and more!

Kotlin 1.7.20 Beta Is Now Available

This preview version of Kotlin brings:

  • The new Kotlin K2 compiler that supports Lombok, all-open, Parcelize, and other compiler plugins.
  • A preview of the ..< operator for creating open-ended ranges.
  • The new Kotlin/Native memory manager enabled by default.
  • A new experimental feature for JVM – inline classes with generic underlying type.

Learn more about these features and how to enable them in What’s new in Kotlin 1.7.20-Beta.

Try Kotlin 1.7.20 Beta

The Complete List of the Workshops Has Been Announced!

Amazing speakers from JetBrains, Google, Touchlab, and other companies will cover cutting-edge topics! Jetpack Compose, Multiplatform Mobile in production, TDD, Microservices with Ktor and Kafka, Reactive Spring Boot with Coroutines, and more are on the menu for the KotlinConf’23 workshop day.

Seats for each workshop are limited, so choose your favorite, register soon, and don’t miss out!

Choose a Workshop

The New Multiplatform Mobile Onboarding

If you’ve ever thought of having a crack at Kotlin Multiplatform Mobile, the time is now! Our team has updated the Get Started tutorial. Follow it step by step to create your first application with shared code for iOS and Android.

Start the Tutorial

👩‍🔬 We are looking for 📱 Android developers to participate in a diary study. Our goal is to make the onboarding process with Kotlin Multiplatform Mobile even smoother. If you would like to take part, please complete this quick screener survey and choose a time that would work for you if your profile matches our criteria. As a token of our appreciation, every interview participant will receive a gift. 🎁

Take the survey

Webinar: Kotlin and Code With Me

Besides collaborative software development, the Code With Me tool is a true gem for showing and explaining code to others. Together with Matt Ellis and Sebastian Aigner, we will explore the best practices for knowledge sharing using Code With Me. Join the webinar on August 11, 7.00 pm CET.

Register

Multik v0.2 Has Been Released!

Multik is a multidimensional array library for Kotlin, and in July we released version 0.2.0. The new release brings multidimensional arrays to your favorite multiplatform projects. It also brought support for Android and Apple Silicon processors and usability improvements.

Kudos from the team to Luca Spinazzola, who has contributed massively to the multiplatform capabilities of the library in this release.

Learn More

Incremental Compilation in Kotlin – The New Approach

We introduced the new incremental compilation for project changes in cross-module dependencies. Now incremental compilation is supported when changes are made inside dependent non-Kotlin modules. It is also compatible with the Gradle build cache. The new approach is currently in the experimental state and has been released only for the JVM backend. You can discover more information, including about benchmarks, in our blog post.

Try the new approach

Kotlin Design Patterns and Best Practices | Talking Kotlin

The new episode of Talking Kotlin with Alexey Soshin is dedicated to Kotlin design patterns. Alexey is a software architect with more than 15 years of experience and the author of the book “Kotlin Design Patterns and Best Practices”. As always, the new episode is brought to you by the wonderful Hadi Hariri and Sebastian Aigner. Check it out now!

Watch the video

From Java to Kotlin and Back | Kotlin Team Tutorial

A new tutorial from the Kotlin team has been published! Our developer advocate, Anton Arhipov, shares essential details you need to know about calling Java from Kotlin code and vice versa.

Watch the video

New Kotlin API for Apache Spark Is Now Available

The Kotlin API for Apache Spark has been updated to version 1.2. It brings support for MLLib, RDD, UDTs, and UDFs, and now works with all versions of Scala and patch versions of Spark. Want to learn how you can apply it in your projects? Read more in the blog post!

Read more


The State of Mobile Jobs Survey 2022

Mobile tutorials platform raywenderlich.com has initiated the State of Mobile Jobs Survey 2022. The goal of this research is to figure out fair compensation for mobile developers in regards to specific skills, location, and industry. To do that, they have launched an anonymous survey. The results will be fed back to the community after September 15, 2022.

Are you a mobile developer? Fill out the survey!

Fill out the survey

Continue ReadingMonthly News: Kotlin 1.7.20 Beta, KotlinConf Workshops, New Webinar, and more!

We released a new version of ShapeShift (0.5.0) – A lightweight Kotlin first library for Object Mapping. Thanks for the feedback!

Hi again!

Since the last version of ShapeShift we have received more great feedback.

In this version we added:

  • Auto mapping – the most coveted feature with advanced capabilities to take it to the next level.
  • Improved Java support – Less relevant to this sub but still…

We have added it to the already available features:

  • A complete native Kotlin DSL.
  • Conditional mapping.
  • Deep mapping.
  • Mapping decorators for advanced logic.
  • Null values mapping strategy.
  • Fully written in Kotlin.
  • Annotation support.
  • Multi class mappings – Map from source class to multiple different target classes/fields.
  • Mapping to/from subclasses.
  • Custom transformers.
  • Native support for spring (beans).
  • Android support

Your feedback is great and it helps us to improve the library so please keep it coming 🙂 It’s a pleasure to be a part of the open source community and we want to keep push forward and offer great tools to help others.

ShapeShift repository:
https://github.com/krud-dev/shapeshift

ShapeShift documentation:
https://shapeshift.krud.dev/

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Continue ReadingWe released a new version of ShapeShift (0.5.0) – A lightweight Kotlin first library for Object Mapping. Thanks for the feedback!

Trying to learn kotlin with exercism and my brain REALY hurts

OK, so exercism was recommended here but it seems to really suck. Below is my journey to get the first exercise working. I have to say this is the worst learning experience I have ever had and I’ve been doing IT for over 20 years. This is made worse by the fact there does not seem to be any way of getting help on https://exercism.org. Absolutely no help/community help links on the website.

TLDR: the process was badly documented and I did not manage to actually submit the solution.

Ive installed exercism and got the files

$ exercism download --exercise=hello-world --track=kotlin

According to wikipedia page, the exercise links I need to do

fun main() {
println("Hello, World!")
}

but HelloWorld.kt has

fun hello(): String {
return "Goodbye, Mars!"
}

seems a bit overcomplicated for the first exercise with absolutely no teaching before it., but I guess I just change the text, even though it is not the solution exercise linking to.

fun hello(): String {
return "Hello, World!"
}

So now to run the tests. First I need to install the SDK, there are instructions at https://exercism.org/docs/tracks/kotlin/installation#windows but they don’t work. So I had to go to https://chocolatey.org/install#individual to install Chocolatey, then install SDK, so far so good.

I then managed to run

I then run the tests

.gradlew.bat test

Docs do not include the . at the front, you do get told this in the error message but docs should have ..

Submitting the solution is another challenge,

exercism submit <implementation_file_paths>

But could not get this working. Tried submitting HelloWrold.kt

exercism.exe submit "C:UsersloginMy Driveexercismkotlinhello-worldsrcmainkotlinHelloWorld.kt"

Then I realized exercise was not actually a course, just a load of exercises so its all been a waste of time 🙁

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Continue ReadingTrying to learn kotlin with exercism and my brain REALY hurts

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