klip@0.4.1 is out with the reworked persistence strategy that now works on the browser tests too! Give it a go if you've already upgraded to kotlin 1.7.0. WTH is klip you might ask? Well it's a test snapshot library for the entirety of KMP powered by a tiny kotlin compiler plugin. In short it lets you assert current state of your test output data vs some previously frozen version of it to ensure consistency and no changes. If you're familiar with jest snapshot testing - it's exactly that but for KMP.

Just published "Combining StateFlows and transforming it into a StateFlow" Read: https://blog.shreyaspatil.dev/combining-stateflows-and-transforming-it-into-a-stateflow

Are you a GitHub action owner? Do you want to make your action more type-safe to use (e. g. through a Kotlin DSL) or simply better document your action's API? If so, we started working on a standardized way to document types for your action's inputs and outputs. If you want to be an early adopter, please head to https://github.com/krzema12/github-actions-typing and read the README to learn more. Looking forward to any feedback or questions! Feel free to also join #github-actions-kotlin-dsl

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Know about the real-time state of Android app permissions anywhere in the application with Kotlin Flow APIs. Library: https://github.com/PatilShreyas/permission-flow-android

Just published an article about TestDispatchers. Let me know if you have encountered other fragile test cases or if you find any issues with the article. https://proandroiddev.com/testdispatcher-become-the-clock-master-300c13ca46c0

Not mine, just wanted to share https://www.marcogomiero.com/posts/2022/improved-kmm-shared-app-arch/

Kotlin DataFrame Library Preview TL;DR: We at the Kotlin team have developed a Kotlin library for data frames. Today we’re releasing its first public preview version. It provides a readable and powerful DSL for data wrangling and i/o via CSV, JSON, Excel, and Apache Arrow, as well as interop with Kotlin data classes and hierarchical data schemas. The library […]

Hello friends. If you prefer Kotlin to YAML, the library #github-actions-kotlin-dsl provides a type-safe alternative to write your GitHub workflows in Kotlin. We just released an IMHO pretty cool feature to make your GitHub expressions typesafe as well! https://krzema12.github.io/github-actions-kotlin-dsl/user-guide/type-safe-expressions/

One of the most useful applications of functional programming is collection processing. Let's learn about essential collection processing functions. That is also a start of a series of articles about functional collection processing functions written by @marcinmoskala. Part 1: 👇 https://kt.academy/article/fk-cp-basic

Hi all! There were a lot of updates in a library witch I develop. It is an Elasticsearch search query builder: https://github.com/anti-social/elasticmagic-kt Now it supports Elasticsearch

6.x

,

7.x

and

8.x

and also Opensearch. Dynamic templates and multi-search requests were added. All the API is strictly typed. Also I want to introduce a concept of

query filters

. They allow you to describe modifications of search queries in a declarative manner. Using them you can filter, sort, paginate and build facet filters for you data in a few lines of code. Just see an example: https://anti-social.github.io/elasticmagic-kt/query-filters/ Although it is in an alpha state but I successfully use it in several simple projects.

Kotlin 1.7.10 is out :> https://github.com/JetBrains/kotlin/releases/tag/v1.7.10

Doodle 0.8.0 Released 3D Transforms Views can now have full 3D transformations via their

transform

property. This works because

AffineTransform

has been updated to support scale, rotation, and translations that involve x, y and z axes. The result is that Views can now be placed in a full 3D space by simply giving them a transform that has been modified accordingly.

import io.nacular.doodle.drawing.AffineTransform.Companion.Identity
import io.nacular.measured.units.Angle.Companion.degrees

// Rotate this View around they y-axis (through its center) by 45°
view.transform *= Identity.rotateY(around = view.center, by = 45 * degrees)

Views can also now render in 3D, since

Canvas

also supports the new 3D transforms.

view {
    render = {
        transform(Identity.rotateY(by = 45 * degrees)) {
            // ...
        }
    }
}

3D Perspective A realistic 3D space requires more than just affine transforms (which keep parallel lines parallel). Simulating this requires perspective transforms. Views now have a

camera

property, which gives them a perspective when combined with a 3D transform. The following allows the y-axis rotation to look more realistic.

import io.nacular.doodle.drawing.AffineTransform.Companion.Identity
import io.nacular.measured.units.Angle.Companion.degrees

// Rotate this View around they y-axis (through its center) by 45°
view.transform *= Identity.rotateY(around = view.center, by = 45 * degrees)

// Position the View's camera to apply some realistic perspective warping
view.camera = Camera(position = view.center, distance = 1000.0)

Canvas also takes a

Camera

in its

transform

method to enable perspective.

view {
    render = {
        transform(Identity.rotateY(by = 45 * degrees), camera = Camera(Origin, distance = 1000.0)) {
            // ...
        }
    }
}

Kotlin 1.7 Support Doodle now supports 1.7.10!! https://github.com/nacular/doodle/releases/tag/v0.8.0

Added full screen exoplayer with custom controls to my video games explorer sample app. Check it out! https://github.com/rubenquadros/Jetpack-Compose-Video-Games-Example

Bonjour! I just published on article on how Kotlin scripts powered by #github-actions-kotlin-dsl can rescue the world from the insane type-unsafe YAML programming 😈 that GitHub actions inflicted on us 🙂 https://dev.to/jmfayard/github-actions-a-new-hope-in-yaml-wasteland-1i9c

I've written a library that will generate TypeScript interfaces based on Kotlinx Serialization annotated classes! https://github.com/adamko-dev/kotlinx-serialization-typescript-generator This is really helpful for writing TypeScript and Kotlin libraries that communicate via JSON messages. I'm particularly pleased with the sealed class generation - it creates really idiomatic code that's useful at both ends. • work in progress - there are still some rough edges! • It's on Maven Central • it's multiplatform (JVM and JS at the moment)

Well then, here’s a multiplatform Base64 encoder / decoder library supporting both URL-safe and standard formats: https://github.com/saschpe/Kase64

Aand a lightweight multiplatform logging library with support for SLF4j: https://github.com/saschpe/Log4K

Meta just open-sourced an automatic differentiation framework for Kotlin! (https://diffkt.org/). It can compute higher-order and symbolic derivatives, supports user-defined types, and has compile-time shape checking. Examples include machine learning and physical simulations.

Folding stands behind nearly all collection processing functions. fold and reduce are our super agents, which we can use whenever we cannot find a more specific collection processing function. Learn more from the article written by @marcinmoskala. Part 2: 👇 https://kt.academy/article/fk-cp-fold

Hey, We at CRED have open-sourced our NeoPOP library; the UI Kit that powers the entire CRED app’s NeoPOP design. Feedback and contributions are much appreciated! https://github.com/CRED-CLUB/neopop-android

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Kotlin News: KotlinConf, Build Reports, DataFrame Preview, and More Kotlin Developer Survey is Open Share your opinions about the language itself, IDEs, libraries, build tools, and subsystems. Your answers will help the Kotlin team make the language and tools even better and more convenient. Give your feedback KotlinConf is Back! KotlinConf is making a glorious comeback! It will take place in Amsterdam on April […]

A New Approach to Incremental Compilation in Kotlin In Kotlin 1.7.0, we’ve reworked incremental compilation for project changes in cross-module dependencies. The new approach lifts previous limitations on incremental compilation. It’s now supported when changes are made inside dependent non-Kotlin modules, and it is compatible with the Gradle build cache. Support for compilation avoidance has also been improved. All of these advancements decrease […]

Hello folks, if you're curious about how VectorDrawables and SVG work, and wonder if you could generate nice graphics with quite short Kotlin code, this article is for you! https://blog.louiscad.com/optimized-chessboard-pattern-vectordrawable-in-kotlin

Hey all, for all interested in developing Kotlin with SpringBoot, I've written a small example how to evolve a rest api example application: https://link.medium.com/IOFuwZXOGrb

Hey hey :android-wave: Happy to share that #detekt 1.21.0 stable is out 🎉 https://github.com/detekt/detekt/releases/tag/v1.21.0