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Creator of the Spring Framework: I basically had no desire to write Java, at all
https://www.youtube.com/watch?v=MQuPfZsiVx8
https://www.youtube.com/watch?v=MQuPfZsiVx8
YouTube
What is your opinion?
Catch Rod Johnson at KotlinConf 2025 👉 https://kotlinconf.com/speakers/7d983480-a141-4710-bbf5-4b90c23c9b9b/
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Update on KT-14663 by Mikhail Zarechenskiy:
https://youtrack.jetbrains.com/issue/KT-14663/Support-having-a-public-and-a-private-type-for-the-same-property#focus=Comments-27-11853379.0-0
https://youtrack.jetbrains.com/issue/KT-14663/Support-having-a-public-and-a-private-type-for-the-same-property#focus=Comments-27-11853379.0-0
YouTrack
Support having a "public" and a "private" type for the same property : KT-14663
Description Use case: We often store something as, say, an ArrayList, but expose it as a read-only List, or a MutableList. But internally we want to access it as an ArrayList. There are a few possible solutions to this. One is to explicitly have "public"…
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In Kotlin version 2.2.0 context parameters are released as Beta 🎉
https://blog.jetbrains.com/kotlin/2025/04/update-on-context-parameters/
https://blog.jetbrains.com/kotlin/2025/04/update-on-context-parameters/
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The JetBrains Blog
Update on Context Parameters | The Kotlin Blog
Context parameters will be replacing context receivers in Kotlin, with version 2.2.0 featuring them as Beta. We are committed to providing an easy migration between both features, including dedicated compiler and IntelliJ IDEA support.
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New KSP release with KSP2 enabled by default!
https://github.com/google/ksp/releases/tag/2.1.20-2.0.0
https://github.com/google/ksp/releases/tag/2.1.20-2.0.0
GitHub
Release 2.1.20-2.0.0 · google/ksp
What's Changed
Bumped version to 2.0.0 and enabled KSP2 by default!
No-op blockOtherCompilerPlugins #2397
A couple of fixes to compilation avoidance #2401
KSTypeReferenceResolvedImpl.toString(...
Bumped version to 2.0.0 and enabled KSP2 by default!
No-op blockOtherCompilerPlugins #2397
A couple of fixes to compilation avoidance #2401
KSTypeReferenceResolvedImpl.toString(...
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Kotlin 🎉
🚀 Major New Features
🔹 Context-Sensitive Resolution (KT-75315, KT-75316, KT-75061)
🔹 Context Parameters (KT-74546, KT-72639, KT-75017)
🔹 K2 Compiler Enhancements
🔹 -Xjvm-default=all-compatibility is now default (KT-71768)
🔹 New Annotations: @MustUseValue, @IgnorableValue (KT-74804)
🔹 Unnamed Local Variables (KT-74809)
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-Beta1
2.2.0-Beta1 🚀 Major New Features
🔹 Context-Sensitive Resolution (KT-75315, KT-75316, KT-75061)
🔹 Context Parameters (KT-74546, KT-72639, KT-75017)
🔹 K2 Compiler Enhancements
🔹 -Xjvm-default=all-compatibility is now default (KT-71768)
🔹 New Annotations: @MustUseValue, @IgnorableValue (KT-74804)
🔹 Unnamed Local Variables (KT-74809)
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-Beta1
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GitHub
Release Kotlin 2.2.0-Beta1 · JetBrains/kotlin
Changelog
Analysis API
KT-75880 K2 Mode: Typealias reference resolves to the underlying class in KMP project
KT-74246 KaVisibilityChecker.isVisible is inefficient with multiple calls on the same u...
Analysis API
KT-75880 K2 Mode: Typealias reference resolves to the underlying class in KMP project
KT-74246 KaVisibilityChecker.isVisible is inefficient with multiple calls on the same u...
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K2 mode is the default in IntelliJ IDEA 2025.1
https://blog.jetbrains.com/idea/2025/04/k2-mode-in-intellij-idea-2025-1-current-state-and-faq/
https://blog.jetbrains.com/idea/2025/04/k2-mode-in-intellij-idea-2025-1-current-state-and-faq/
The JetBrains Blog
K2 Mode in IntelliJ IDEA 2025.1: Current State and FAQ | The IntelliJ IDEA Blog
Starting with IntelliJ IDEA 2025.1, K2 mode, a new implementation of Kotlin support, will be enabled by default. This change is an important step in the ongoing effort to improve Kotlin support in the
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- Kotlin
- Mellum Goes Open Source: A Purpose-Built LLM for Developers, Now on Hugging Face – LLM behind Idea's code completion
- Structuring Ktor Projects Using Domain-Driven Design (DDD) Concepts: A Step-by-Step Guide With a Minimalistic CRM – Architecture for your next Ktor application
2.1.21-RC2 (with just one fix in Kotlin/JS gradle tooling)- Mellum Goes Open Source: A Purpose-Built LLM for Developers, Now on Hugging Face – LLM behind Idea's code completion
- Structuring Ktor Projects Using Domain-Driven Design (DDD) Concepts: A Step-by-Step Guide With a Minimalistic CRM – Architecture for your next Ktor application
The JetBrains Blog
Mellum Goes Open Source: A Purpose-Built LLM for Developers, Now on Hugging Face | The JetBrains Blog
Mellum doesn't pretend to know everything, but it does one thing exceptionally well. We call it a focal model – small, efficient, and built with a specialized focus.
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Kotlin
- `context()` and `contextOf<T>()` added to stdlib for context parameters
- jvm target bytecode v24 support (who cares?)
- Kotlin 1.6 and 1.7 language versions retired
- let's try context-sensitive resolution? `-Xcontext-sensitive-resolution`
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-Beta2
2.2.0-Beta2- `context()` and `contextOf<T>()` added to stdlib for context parameters
- jvm target bytecode v24 support (who cares?)
- Kotlin 1.6 and 1.7 language versions retired
- let's try context-sensitive resolution? `-Xcontext-sensitive-resolution`
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-Beta2
YouTrack
Standard library functions to work with context parameters : KT-72866
See https://github.com/Kotlin/KEEP/blob/context-parameters/proposals/context-parameters.md#standard-library-support 1. The "context" function adds a new value to the context, in an anonymous manner. 2. We also provide a generic way to obtain a value by type…
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Kotlin Poet with support of context parameters released
https://github.com/square/kotlinpoet/releases/tag/2.2.0
https://github.com/square/kotlinpoet/releases/tag/2.2.0
GitHub
Release 2.2.0 · square/kotlinpoet
Thanks to @IRus for contributing to this release.
New: Kotlin 2.1.21.
New: KSP 2.1.21-2.0.1.
New: Add support for context parameters. (#2112)
New: Eliminate Guava dependency. (#2110)
New: Migrate ...
New: Kotlin 2.1.21.
New: KSP 2.1.21-2.0.1.
New: Add support for context parameters. (#2112)
New: Eliminate Guava dependency. (#2110)
New: Migrate ...
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Kotlin
Bug fixes and Gradle 8.14 support
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-RC
2.2.0-RC (2.2.0 will be released @ KotlinConf?)Bug fixes and Gradle 8.14 support
https://github.com/JetBrains/kotlin/releases/tag/v2.2.0-RC
GitHub
Release Kotlin 2.2.0-RC · JetBrains/kotlin
Changelog
Compiler
Fixes
KT-77259 Confusing message for ANNOTATION_WILL_BE_APPLIED_ALSO_TO_PROPERTY_OR_FIELD
KT-77219 "@Composable annotation is not applicable" on vararg @Composable () ...
Compiler
Fixes
KT-77259 Confusing message for ANNOTATION_WILL_BE_APPLIED_ALSO_TO_PROPERTY_OR_FIELD
KT-77219 "@Composable annotation is not applicable" on vararg @Composable () ...
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