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Kotlin Weekly - Kotlin Weekly #321

 
 

ISSUE #321

25th of September 2022
 

Hello from Berlin! We are here to run the Berlin marathon, which does not make us better at Kotlin, but does it make us happier? Also not. Find our selection of articles for the upcoming week here, and enjoy your Sunday!



Announcements


Arrow 1.1.3 is now available
There is a new Arrow version live, 1.1.3, with fixed Resource release order, variance changes for the Effect DSL, and several community contributions.
www.47deg.com



Articles


Report card: Java 19 and the end of Kotlin
Jake Wharton reviews his forecasts about what a future Java language would look like in September 2022, when Java 19 was released. It’s September 2022 right now, and some of his prophecies might have happened.
jakewharton.com

Why iOS Engineers Should Avoid This Glorified KMM Technique
If you’re an iOS engineer who wants to build multiplatform apps using KMM, the few benefits of using the expect/actual syntax do not outweigh those of writing your platform-dependent code in Swift. Read in this article what you should do instead.
artandscienceofcoding.com

Compose UI for iOS
The Touchlab wizards that worked on the Droidcon NYC app have published a technical blog post on how they use Compose to generate the UI for their iOS app.
touchlab.co

Compile time exception handling in Kotlin
In Kotlin, there is no concept of checked exception similar to Java. We can either handle the exception or let it crash at runtime. See how we can handle some of compile time exceptions happening in Kotlin.
blog.kotlin-academy.com


Sponsored

Learn the Best Way to Solve ANRs
Want to finally address the ANRs that are tanking your Google Play Store ranking? In this eBook, we’ll highlight the best way for mobile teams to solve the most costly ANRs. If you're tired of staring at useless Google Play Console stack traces, then this eBook is for you.
go.embrace.io



Android


Android Lint and Detekt warnings in GitHub pull requests
Folks at Bumble explain how they integrate static analysis for Kotlin at their GitHub pull requests.
medium.com

Design Patterns and Architecture: The Android Developer Roadmap – Part 4
Part 4 of the series of articles at Stream about best practices and design patterns for Android.
getstream.io



Videos


Dead Simple Dependency Injection with Kotlin Default Arguments
Duncan McGregor explains how to extract a function that builds the app from its components and use default arguments for the production configuration to achieve CI instead of using any framework.
www.youtube.com



Libraries


Aedile
Aedile is a simple Kotlin wrapper for Caffeine that prefers coroutines rather than Java futures.
github.com

Dart for Kotlin developers
Dart Language Cheat Sheet for Kotlin Developers.
github.com

KopyKat
KopyKat are little utilities for more pleasant immutable data in Kotlin.
kopyk.at

Scope functions
There is a group of minimalistic but useful inline functions from the standard library called scope functions. This group typically includes let, apply, also, run and with. Some developers also include takeIf and takeUnless in this group. This article discusses their usage and how they work.
kt.academy

Kotlin coding challenges
Kotlin coding puzzle and solutions by Igor Wojda.
github.com

ShapeShift
ShapeShift is a lightweight, modular, performant and extensible object mapping library for Kotlin/Java.
shapeshift.krud.dev

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Key phrases

Google Play Store ranking fixed Resource release order Dead Simple Dependency Injection extensible object mapping library Dart Language Cheat Sheet The Android Developer Roadmap Compile time exception handling several community contributions technical blog post pleasant immutable data lightweight modular performant The Touchlab wizards useful inline functions simple Kotlin wrapper future Java language new Arrow version Glorified KMM Technique Droidcon NYC app Articles Report card GitHub pull requests Kotlin Default Arguments

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