Kotlin v1.4.21
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Overview
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Kotlin plugin 2020.3
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Collections Overview
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Coroutines Guide
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Multiplatform Programming
Kotlin Multiplatform
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Multiplatform Gradle DSL Reference
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kotlin.test
Reference
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JavaScript
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Calling Kotlin from JavaScript
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Compatibility Guide for Kotlin 1.3
Compatibility Guide for Kotlin 1.4
FAQ
FAQ
Comparison to Java
kotlin-stdlib / kotlin.collections / LinkedHashMap / keys

keys

Common
1.0
val keys: MutableSet<K>
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Kotlin™ is protected under the Kotlin Foundation and licensed under the Apache 2 license. Supported and developed by JetBrains
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