Effective Kotlin @EffectiveKotlin
Profile of the Effective Kotlin book by @marcinmoskala kt.academy/book/effective… Joined July 2018-
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People think Kotlin Coroutines are complicated, because they do not know how much they do. This seemingly simple code is impossible to reproduce in most languages and libraries. JVM gave us tools to reproduce it in 21, but it is much more complicated to implement. 🥵 Thread 🧵👇
Transforming lists into arrays can sometimes help us have a crazy amount of memory❗ Of course, such optimizations make sense only in very specific cases.
With @PreusslerBerlin at #dcbln25 Thank you @droidcon for inviting me another time to this event!
👋 Join us on October 14 for a free live session: Kotlin Coroutines Best Practices In just 60 minutes, you’ll learn practical techniques that make your coroutine code easier to write, safer to run, and simpler to maintain. Bring your own questions—we’ll cover them live! 🧔🏻…
Same Course. Smaller Price. As programmers, we value efficiency—less code, fewer resources, cleaner solutions. Paying more for the same result isn’t efficient. Coroutines Mastery delivers the same structured path to coroutine expertise: lessons, exercises, Q&A, and a final…
Say hello to Kotlin stdlib atomics! One of the most important tools for concurrent applications and libraries is now standarized, multiplatform and really efficient. 💪💪💪
One of the most heated discussion in Android is about using UiState pattern. UiState aggregates all possible states of a view into one hierarchy. In result: 👉 Our view is consistently represented in one property. 👉 We do not need to deal with properties that are currently not…
Learn how to build flexible and predictable AI agents with Koog — the most advanced AI framework for JVM. This article, by @Ololoshechkkin dives into strategy graphs, explaining how they work and how you can design scalable, graph-based strategies for AI. 👉 Read it here:…
The fastest way to mastery isn’t just “more content.” It’s the right layers, stacked in the right order. That’s why Coroutines Mastery is not like any other course. It’s been designed as the most efficient learning experience you can get: • Text lessons → detailed, searchable,…
In so many projects we have legacy RxJava or Reactor parts. Thankfully, we have amazing support for interoparating between them and Flow. Learn about it in this new article by @marcinmoskała. kt.academy/article/intero…
Here is a very practical example of yield function from Marcin Moskala’s game, He uses a very complex function to generate challenges. It can take a couple of seconds. If this function is started on the same thread as UI, application would be frozen. In Android the simplest…
runBlocking is often misused, what leads to terrible mistakes that slow down our code. Let’s see how it should be used and how it should be not.
This wonderful reviews comes from an attendees of one of our workshops ⭐️. We truly value your feedback — it helps us grow and shows the impact Marcin Moskala’s workshops bring to the Kotlin community. If you’ve attended one of his sessions, we’d love to hear your thoughts too!…
🎤 Honored to speak at @javazone this year, sharing insights on Kotlin variance modifiers and the Covariant Nothing Object pattern. The Kotlin community never stops inspiring me — the questions, discussions, and curiosity around advanced topics show just how much depth this…
The first rule of performance is to not be blind❗ Setup application measurements, they will tell you if you need to optimise, and what you need to optimise 📈 Let’s see what we can use on backend 👇
7 years of teaching Kotlin Coroutines taught me one thing: most problems come from missing foundations. That’s why I decided to create learning materials myself. First came my book “Kotlin Coroutines: Deep Dive.” Now comes Coroutines Mastery — the complete 5-week course. It…
This is how modifiers are applied one after another: 👉 Background draws behind the whole area. 👉 Clip limits drawing space to the circle shape. 👉 Border draws border, around whole square, but it gets limited by circular area. It also clips the area where border is drawn (to…
A Resource I Wish I Had Years Ago cheat-sheet.kt.academy/coroutines If I could go back and hand myself one resource when I first started with Kotlin coroutines — this cheat sheet would be it. Years of teaching and coding with coroutines went into the 2025 Kotlin Coroutines Cheat Sheet.…
NEW WEBINAR: Testing Coroutines — Practical Insights A free session on testing coroutines in real projects. Topics include: - Virtual time with `runTest` - Suspending functions - Testing ViewModels & end-to-end flows 📅 Mon, 15 Sep | 13:00 & 18:00 CEST 🎥 Recording included |…
One less known, but surprisingly useful modifier is intrinsic weight/height. They allow us to give children even size, that is max/min from each of them. 💪
Márton Braun @zsmb13
8K Followers 542 Following Kotlin Developer Advocate @JetBrains. GDE for Kotlin & Android. Ex-@Google. Instructor @ BME-VIK. Co-organizer @androidbudapest and @androidww_.
kt.academy @ktdotacademy
5K Followers 164 Following Valuable content on Kotlin, Android, and backend development! → Expert tips → Best Practices → Tutorials → Insights from Marcin Moskała → Books & Workshops
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Marcin Moskała @marcinmoskala
11K Followers 189 Following Fullstack Kotlin, founder of @KtDotAcademy, JetBrains partner, GDE in Kotlin, author of Effective Kotlin and Kotlin Coroutines. Workshops: https://t.co/k2YqQwjvS3
kt.academy @ktdotacademy
5K Followers 164 Following Valuable content on Kotlin, Android, and backend development! → Expert tips → Best Practices → Tutorials → Insights from Marcin Moskała → Books & Workshops
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9K Followers 2K Following #GOTO Presents the Brightest Minds in Tech. Check out GOTO Conferences. Join us on the other side: https://t.co/BPo8tCStDc
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