2010:
Kotlin Project Starts: JetBrains begins development on Kotlin. The project aims to create a concise, elegant, expressive, and Java-interoperable language to reduce boilerplate code and introduce new constructs like higher-order functions. July 2011:
Project Kotlin Public Release: JetBrains initially releases the language under the name “Project Kotlin.” February 2012:
Kotlin Open-Sourced: JetBrains open-sources the Kotlin project under the Apache 2 license. February 15, 2016:
Kotlin 1.0 Released: Kotlin reaches its first major milestone with the official 1.0 release, signalling its readiness for production use. It is highlighted as a pragmatic programming language for the JVM and Android, focusing on interoperability, safety, clarity, and tooling support. JetBrains reconfirms its long-term commitment to the project. April 22, 2018 (or earlier):
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