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Updated: May 10, 2026 at 2:34 PM

The Daily Kotlin

Kotlin Chats in Telegram: RU https://kug.community/ EN https://kug.community/en Kotlin news and tips

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The Daily Kotlin

May 14, 2026, 06:53 PM

https://github.com/mokksy/mokksy

1,270

The Daily Kotlin

May 14, 2026, 06:53 PM

https://www.youtube.com/watch?v=m0Cq6J-V_RY

1,150

The Daily Kotlin

May 14, 2026, 06:53 PM

Kotlin 2.3.10

https://github.com/JetBrains/kotlin/releases/tag/v2.3.10

1,340

The Daily Kotlin

May 14, 2026, 06:53 PM

🎉 Better Immutability in Kotlin aka "Value Classes 2.0"

https://github.com/Kotlin/KEEP/blob/main/proposals/KEEP-0453-better-immutability-value-classes-motivation.md
https://github.com/Kotlin/KEEP/blob/main/proposals/KEEP-0454-better-immutability-value-classes-MFVC.md

TL;DR:

1. value class Complex(val re: Double, val im: Double)
2. without identity
3. copy-vars: a.b = c translated into a = a.copy(b = c)
4. cross-module smart casts & more

1,380

The Daily Kotlin

May 14, 2026, 06:53 PM

https://github.com/Kotlin/KEEP/blob/main/proposals/KEEP-0451-shared-internals.md

1,150

The Daily Kotlin

May 14, 2026, 06:53 PM

🚀 Kotlin Ecosystem Mentorship Program (pilot) is live!

Want to get into Kotlin open source (or help someone do it)? The Kotlin Foundation is matching project maintainers (mentors) with new contributors (mentees) to ship at least 1 meaningful contribution (code, docs, tooling, etc.).

🗓 Timeline: mid-Feb → early April
⏱ Time: mentors ~30–60 min/week • mentees ~2–4 h/week
🎁 Perks: Kotlin swag for successful pairs + one random pair wins an all-expenses trip to KotlinConf 2026
📩 Pairs announced by: Feb 16, 2026

👉 https://blog.jetbrains.com/kotlin/2026/02/kotlin-ecosystem-mentorship/

1,190

The Daily Kotlin

May 14, 2026, 06:53 PM

https://github.com/Kotlin/KEEP/blob/main/proposals/KEEP-0452-assign-once.md

1,340

The Daily Kotlin

May 14, 2026, 06:53 PM

https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.10.0

1,150

The Daily Kotlin

May 14, 2026, 06:53 PM

Kotlin 2.3.20-Beta2

https://github.com/JetBrains/kotlin/releases/tag/v2.3.20-Beta2

• Collection literals WIP https://youtrack.jetbrains.com/issue/KT-83401, https://youtrack.jetbrains.com/issue/KT-82638, https://youtrack.jetbrains.com/issue/KT-80492
• Unused return value checker WIP https://youtrack.jetbrains.com/issue/KT-74860
• Kotlin Maven Plugin imporvments https://youtrack.jetbrains.com/issue/KT-79304, https://youtrack.jetbrains.com/issue/KT-83565
• Improve compile-time constants WIP https://youtrack.jetbrains.com/issue/KT-82161

1,100

The Daily Kotlin

May 14, 2026, 06:53 PM

https://blog.jetbrains.com/kotlin/2026/01/ktor-3-4-0-is-now-available/

• OpenAPI generation from code
• Duplex streaming for OkHttp
• Zstd compression support
• HttpRequestLifecycle

1,210

The Daily Kotlin

Apr 4, 2026, 03:27 PM

https://blog.jetbrains.com/kotlin/2026/01/exposed-1-0-is-now-available/

1,120

The Daily Kotlin

Apr 4, 2026, 03:27 PM

Kotlin 2.3.0-RC2

Kotlin 2.3.0 Coming!

https://github.com/JetBrains/kotlin/releases/tag/v2.3.0-RC2

1,450

The Daily Kotlin

Apr 4, 2026, 03:27 PM

Kotlin 2.3.0 🎉

https://blog.jetbrains.com/kotlin/2025/12/kotlin-2-3-0-released/
https://kotlinlang.org/docs/whatsnew23.html
https://github.com/JetBrains/kotlin/releases/tag/v2.3.0

My checklist for this release:
- Upgrade production to Java 25
- Gradle 9.2.1 (already done)
- Gradually enable https://kotlinlang.org/docs/whatsnew23.html#unused-return-value-checker
- https://kotlinlang.org/docs/whatsnew23.html#changes-to-context-sensitive-resolution
- Try https://kotlinlang.org/docs/whatsnew23.html#explicit-backing-fields

1,790

The Daily Kotlin

Apr 4, 2026, 03:27 PM

https://blog.jetbrains.com/amper/2025/11/amper-update-november-2025/

1,430

The Daily Kotlin

Apr 4, 2026, 03:27 PM

https://github.com/Kotlin/kotlinx-schema

1,950

The Daily Kotlin

Apr 1, 2026, 12:51 AM

Kotlin 2.3.0-RC

https://github.com/JetBrains/kotlin/releases/tag/v2.3.0-RC
https://kotlinlang.org/docs/whatsnew-eap.html

1,660

The Daily Kotlin

Mar 30, 2026, 04:51 AM

Ktor 3.3.2

https://github.com/ktorio/ktor/releases/tag/3.3.2

1,300

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