Category Archives: Uncategorized

kapt: Annotation Processing for Kotlin

As there have been many requests to support Java Annotation Processing, we are working on it, and first results are ready for preview. This is the call for early feedback.

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Advanced Features of Anko

Last week we published a new version of Anko. While the main purpose of this library is creating layouts though a DSL, even the users of XML layouts can benefit from it. Today we are going to talk about such … Continue reading

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Anko 0.6 is Released

Today we are glad to present the new version of Anko — a library which facilitates Android application development. We are happy to have received lots of feedback, and some of the changes in 0.6 were actually proposed by the … Continue reading

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Try Kotlin in Your Browser: New Look and More Features

We released Kotlin Web Demo quite a while ago, it did a good job helping people try Kotlin right in the browser and share runnable code with each other. Now, a shiny new version is ready, it’s time to retire … Continue reading

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Upcoming Change: More Null-safety for Java

Our battle for combining null-safety and Java interop has been a long one already: we started off treating all Java reference types as nullable, and it was too inconvenient; then we employed external annotations to specify nullability, created KAnnotator, but … Continue reading

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Upcoming Change: Function Types Reform

Kotlin M12 will likely bring another change that is crucial for implementing a useful reflection library for Kotlin. In short, we are going to unify FunctionX and ExtensionFunctionX to be represented in the same way at runtime, but it will … Continue reading

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Announcing Anko for Android

We’re excited to announce a library we’ve been working on for Android development, which, among other things allows the creation of Application Interfaces in a type-safe and dynamic way using a DSL. A Sample Taste Here is a small example … Continue reading

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More changes: Enum Syntax, Another Deprecation and More

Enum Syntax Currently the syntax for enums with non-trivial constructors is kind of monstrous:

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More Deprecations Coming

There are two more items on the language cleanup list: backing-field syntax and static type assertion operator.

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Upcoming Change: Syntax For Annotations

Kotlin’s syntax for annotations was inspired by C#, which surrounds them with square brackets:

But brackets are precious for a language designer, and we would really like to use them later for something else, so we are considering changing … Continue reading

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