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Dave Leeds @typealias.com · 15/07/2026

Flows or Channels? In today's 9-minute video, we'll see why channels can model certain kinds of workflows well, even when the Flow API isn't a natural fit. www.youtube.com/watch?v=qyMP... #Kotlin #AndroidDev

youtube.com

When Flows Won't Cut It

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 01/07/2026

Callback-based libraries crampin' your style? With just a super-thin adapter layer, you can convert that third-party callback-based library to work beautifully with Kotlin's coroutines. Here's how. www.youtube.com/watch?v=Ii3w... #Kotlin #AndroidDev

youtube.com

Say Goodbye to Callbacks

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 17/06/2026

We've been looking forward to this one! Kotlin 2.4 introduces collection literals. Create lists as easy as `val x = [1, 2, 3]`. They can even be combined with name-based destructuring for a neat effect. Today's 6-minute video is all about 'em: www.youtube.com/watch?v=cXg4... #Kotlin #AndroidDev

youtube.com

We've Been Looking Forward to This One...

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 08/06/2026

It's always fun to bring back a souvenir for your family when you travel. Ninja loves her new Kodee plushie from KotlinConf! (And don't worry - she's taking very good care of it.)

Ninja, our miniature schnauzer, holding her new Kodee plushie.

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Dave Leeds @typealias.com · 03/06/2026

You asked for it, you got it! This week's video covers Hot Flows, including SharedFlow and StateFlow. In less than 15 minutes, we'll cover the most important things you need to know about them. www.youtube.com/watch?v=u3bz... #Kotlin #AndroidDev

youtube.com

Learn Kotlin Hot Flows in Just 15 Minutes

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 19/05/2026

Kotlin's return value checker - lots of developers missed this one. In this video, I show how you can use it to expect call sites to use the values returned from your functions. See you at KotlinConf this week! www.youtube.com/watch?v=VDEQ... #Kotlin #AndroidDev

youtube.com

Gotta use that returned value?

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 06/05/2026

Kotlin Flows can throw exceptions... So how should you handle them? Does a regular try-catch work? In today's video, I show where you should (and shouldn't) use try-catch, and what you need to know about the `catch` operator. Watch the video here 👉 typea.li/as/yt2610

typea.li

How to Handle Exceptions in Kotlin Flows

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

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Dave Leeds @typealias.com · 27/04/2026

Don't mind me - I'm just unit testing.

assertThat(Unit.toString()).isEqualTo("kotlin.Unit")

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Dave Leeds @typealias.com · 22/04/2026

In Kotlin's Flow API, when the emitter and collector run on different coroutines, how can we handle values that the collector can't keep up with? In today's 8-minute video, we'll see how we can use buffers, conflation, and debouncing for different effects. www.youtube.com/watch?v=rHYl...

youtube.com

Kotlin Flows: Buffer, Conflate, and Debounce

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 15/04/2026

Have you tried name-based destructuring in Kotlin 2.3.20? In this clip from the recent TypeAlias Show, you can learn all about the three modes of this new experimental feature, and see how you can start using it (or migrating toward it!) in your own projects. www.youtube.com/watch?v=tvpB...

youtube.com

The New Name-Based Destructuring in Kotlin 2.3.20

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 08/04/2026

Hey, thanks so much, Sam - I really appreciate that! I'm especially excited that this will give me a chance to make it back out to KotlinConf this year! 🎉

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Dave Leeds @typealias.com · 06/04/2026

... a good thing. Then we'll see how we can properly get our flows to run on multiple coroutines. The video premieres on Wednesday at 10 AM CDT. Add to your calendar: Google: typea.li/as/st6kmpb Outlook Web: typea.li/as/khd6sjv Download ICS: typea.li/as/gk7vnn2 YouTube: typea.li/as/yt2607 (2/2)

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Dave Leeds @typealias.com · 06/04/2026

Kotlin's flows really become fun once we start putting our emitters and collectors on separate coroutines... but we can't just call `emit()` from inside a `launch` block, because of Context Preservation! In this week's video, we'll see what Context Preservation is and why it's... (1/2)

Thumbnail Image - "Context Preservation and Multi-Coroutine Flows" over an IDE with Kotlin code.

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Dave Leeds @typealias.com · 23/03/2026

Livestream this week! We'll look at updates in the #Kotlin and #AndroidDev worlds, like: - Kotlin 2.3.20 - AS Panda 2 - Android Bench - Updates on sideloading - and more! Google Calendar: typea.li/as/cwnvzvk Download Invite: typea.li/as/3gvy7yb Livestream Page: typea.li/as/live10 See you there!

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Dave Leeds @typealias.com · 11/03/2026

Yes, #Kotlin flows have a lot of familiar operators from the collection and sequence APIs, but since they run on top of coroutines, they also have many operators that you won't find in those APIs. In today's video, I show off some operators that you'll only find on flows! youtu.be/SfS4KOfjc4E

youtu.be

Intro to Flow: You Can't Do THAT with Collections...

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 11/02/2026

This #Kotlin update was easy to miss! You can now use `return` in expression bodies. On the surface, it sounds useless, but I put together this 6-minute video to show the reasons why it's actually an important update. www.youtube.com/watch?v=Y8hu... #AndroidDev

youtube.com

Return... in Expression Bodies?!

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 02/02/2026

Thanks so much to @kotlinweekly.bsky.social for including my video about Kotlin 2.3's Explicit Backing Fields in this week's issue! If you're a #Kotlin developer, go follow them for weekly updates with all the latest Kotlin news.

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Dave Leeds @typealias.com · 27/01/2026

Have you seen the Explicit Backing Fields feature in #Kotlin 2.3? I cover what you need to know about them in this week's video. Add to your calendar 👇 Google Calendar: typea.li/as/d8jvsz3 Download invite: typea.li/as/ybv8kcj "Notify" on YouTube: typea.li/as/yt2602 Premieres Wed at 10 AM CST.

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Dave Leeds @typealias.com · 24/11/2025

Concurrency + Mutable State = Risk Kotlin's design of coroutines prevents a lot of problems, but not race conditions. It does give us some great tools to help, though! Here's a 9-minute video that covers what you need to know about each one. I hope you find it helpful! 👉 youtu.be/Ap-cVIM5ORY

youtu.be

How to Prevent Race Conditions in Kotlin Coroutines

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 08/09/2025

I can't wait to start up the livestreams again! We're kicking off the fall season this Wednesday at 10 AM CDT with special guest Kevin Tang, who's going to show us what Firebender can do! typea.li/as/live08 Add to your calendar: Google - typea.li/as/vvcxd6l Download Invite - typea.li/as/8lxgxw2

typea.li

Firebender - TypeAlias Show #8

We're kicking off the fall season with special guest Kevin Tang, who's going to show us what Firebender can do. In this episode, we will: - Check out some of the latest roadmap updates for Kotlin. - ...

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Dave Leeds @typealias.com · 05/09/2025

Need to put those #Kotlin flows together? The merge(), combine(), and zip() functions are available, and each one works a little differently - I break them down for you in this video. youtu.be/Jmwr9vcmWWs

youtu.be

Putting Kotlin Flows Together

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 14/08/2025

Wow, that's a lot of growth in one year! 🎉

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Dave Leeds @typealias.com · 07/08/2025

It's been a few years since I've worked on a Spring service, but the new Spring Debugger plugin in the latest @intellijidea.com looks really cool! Stuff like... - Loaded vs unloaded beans - Active vs inactive configs - Debug beans at use site More about 2025.2: www.jetbrains.com/idea/whatsnew/

jetbrains.com

What's New in IntelliJ IDEA

Explore IntelliJ IDEA's latest features and updates to elevate your professional Java and Kotlin development experience.

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Dave Leeds @typealias.com · 04/08/2025

Hey, Valère! Thanks for asking! My video editing is done in Davinci Resolve. Some of the annotations (basic lines and circles) are just my own hand-drawn annotations, but the ones that zoom in like that are plugins from MotionVFX. I believe the one in your screen grab is from mHowTo.

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Reposted by Dave Leeds

Kotlin by JetBrains @kotlinlang.org · 22/07/2025

🎟️ Super Early Bird tickets for KotlinConf 2026 are live! 🗺️ We’re heading to Munich, Germany – a brand-new venue in the heart of Europe. Secure your spot now 👉 kotl.in/conf26-tickets

kotl.in

Registration | KotlinConf 2026, May 20–22, Munich

KotlinConf is the official Kotlin conference by JetBrains. It is a place for the community to gather and discuss all things Kotlin.

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Reposted by Dave Leeds

Kotlin by JetBrains @kotlinlang.org · 14/07/2025

📨 Want exclusive KotlinConf news before everyone else? Newsletter subscribers get early access to the Super Early Bird and Early Bird ticket launches, key dates, and more. Subscribe to the KotlinConf newsletter 👉 kotlinconf.com/subscription/

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Dave Leeds @typealias.com · 25/05/2025

Yeah!! We got to be partners for #KotlinConf this year! 🎉

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Dave Leeds @typealias.com · 23/05/2025

Yeah! I thought it was funny that this photo made a brief appearance in your presentation when you clicked over to the notifications page. 😅

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Dave Leeds @typealias.com · 23/05/2025

Building a Bluesky Bot powered by AI at #KotlinConf, by @raphaeldelio.dev

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Dave Leeds @typealias.com · 18/05/2025

Ah, there ya go, that would do it! 😄

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Dave Leeds @typealias.com · 17/05/2025

I'm not on my usual Windows machine here, but on Mac I get the println() output regardless of the dispatcher I choose.

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Dave Leeds @typealias.com · 14/05/2025

Thanks for looking into it! For what it's worth, I'm using Windows here, and Ctrl+C copies just the selection for me.

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Dave Leeds @typealias.com · 12/05/2025

So many exciting announcements in the #Kotlin and #AndroidDev worlds, even ahead of KotlinConf and Google I/O! Let's dig into them during this week's livestream. Plus, we'll check out lots of cool things we can do with Kotlin Notebooks. Wednesday 10 AM CDT. typea.li/as/live07

typea.li

What can we do with Kotlin Notebooks? - TypeAlias Show #7

Google I/O and KotlinConf are just around the corner! Let's get one more livestream in before then! - We'll check out the latest news happening in the Kotlin and Android worlds. - We'll look over som...

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Dave Leeds @typealias.com · 23/04/2025

Double dispatch - let's see what it is, how it's traditionally handled in single-dispatch languages, and how we can get a similar effect in #Kotlin. www.youtube.com/watch?v=4cUQ...

youtube.com

Double Dispatch: Prelude to the Visitor Pattern

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 21/04/2025

This Wednesday's #Kotlin video is about Double Dispatch - gotta understand it before we get to the Visitor Pattern! Premieres this Wednesday: typea.li/as/x9lrbng Add it to your calendar here: Google - typea.li/as/gy9sbvv Outlook Web - typea.li/as/njypjzr Download Invite - typea.li/as/gl5l7c8

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Dave Leeds @typealias.com · 18/04/2025

#Kotlin Notebooks - Now included in IntelliJ IDEA Community Edition! 🎉https://blog.jetbrains.com/idea/2025/04/kotlin-notebook-arrives-in-intellij-idea/

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Dave Leeds @typealias.com · 16/04/2025

JetBrains' Junie AI coding agent has been promoted to general availability. No need to hang out on a waitlist any more! www.jetbrains.com/junie/

jetbrains.com

Junie, the coding agent by JetBrains

Delegate your tasks, focus on the results

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Dave Leeds @typealias.com · 11/04/2025

Thanks so much, Maxime! I hope you enjoy it!

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Dave Leeds @typealias.com · 08/04/2025

Hey, it's a big day! After over 5 years of writing, illustrating, and updating, Kotlin: An Illustrated Guide is finally available in paperback! amazon.com/Kotlin-Illus... Thanks so much to all of you in the #Kotlin community for all the encouragement every step along the way! 🎉

amazon.com

Kotlin: An Illustrated Guide

Kotlin: An Illustrated Guide [Leeds, Dave] on Amazon.com. *FREE* shipping on qualifying offers. Kotlin: An Illustrated Guide

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Dave Leeds @typealias.com · 07/04/2025

What's new in Kotlin 2.1.20? During this Wednesday's livestream, we'll take a look at the new atomic types, some UUID updates, datetime changes, and lots more! typea.li/as/live06 Google Calendar - typea.li/as/4xrb3gm Outlook Web - typea.li/as/zjdkbjs Download Invite - typea.li/as/chnz9lp

youtube.com

Kotlin 2.1.20 - Atomics, UUIDs, and more! - TypeAlias Show #6

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 01/04/2025

For those who grew up in Jacobean England, reading modern English can be confusing with its shorter sentences and less eloquent phrasing. So today I'm releasing the first chapter of #Kotlin: An Illustrated Guide in Shakespearean English! typealias.com/fun/illustra...

typealias.com

Of Variables, Expressions, and the Nature of Types

So thou seekest to be a Kotlin craftsman? Thou hast come unto the right place! Thy journey beginneth here in Chapter the First, wherein thou shalt learn of variables, expressions, and types.

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Dave Leeds @typealias.com · 24/03/2025

Applying the Observer Pattern in Kotlin - premieres Wednesday at 10 AM CDT. See you there! Add it to your calendar here: Google: typea.li/as/ymrwvyl Outlook: typea.li/as/wyj55gw Download Invite: typea.li/as/spxr9mc Or just hit the "Notify Me" button on YouTube: typea.li/as/wt5rcg9

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Dave Leeds @typealias.com · 17/03/2025

Hey! The first proof of the paperback edition of Kotlin: An Illustrated Guide is in hand! After about 5 years of working on this book online and in PDF, it's an amazing feeling to finally experience it in print.

Me, holding the first paperback proof of my book, Kotlin: An Illustrated Guide.

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Dave Leeds @typealias.com · 12/03/2025

Can Junie generate Kotlin code from UML better than traditional UML code generators? Let's see if it can implement functions and properties based on context, notes, and other clues! www.youtube.com/watch?v=J_DF...

youtube.com

Can Junie generate Kotlin code from UML?

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 28/02/2025

They seem to be adding new participants all the time, so if you're interested, definitely hop on that waitlist!

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Dave Leeds @typealias.com · 25/02/2025

In this Wednesday's video, we'll look at JetBrains' new AI coding agent, Junie! We'll put it to work creating a Compose Desktop app that can browse a YouTube channel. Premieres Wednesday at 10 AM US/Central. www.youtube.com/watch?v=XZuw... Use the "Notify me" button in YouTube to get a reminder!

youtube.com

Junie - The New AI Coding Agent from JetBrains - Can it build a Compose Desktop app?

YouTube video by Dave Leeds

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Dave Leeds @typealias.com · 12/02/2025

"How do you make those changes to multiple lines at one time?" - One of the most common questions I get on my videos! In just 5 minutes, I walk you through how to use the multi-caret features in IntelliJ and Android Studio. Let me know if you have any questions! youtube.com/watch?v=f89E...

youtube.com

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Dave Leeds @typealias.com · 27/01/2025

I'm good `Either` way, but I expect our special guest might `Raise` the topic. 😉

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Dave Leeds @typealias.com · 27/01/2025

Arrow isn't just for FP developers - in this week's livestream, join me and a special guest as we demonstrate some of its fantastic features that everyone can benefit from - no FP experience required! typea.li/as/live05 #Kotlin #AndroidDev

Livestream thumbnail - The TypeAlias Show livestream - Arrow for everyone!

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