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kotlinlang

Is the answer to that question just a Java question on the JVM? Are all Kotlin collections just aliases to Java collections? Or are there some Kotlin collections and the performance would be different for those?

there are some Kotlin collections: `ArrayDeque` is one. but in general things forward to Java collections on JVM

Isn't that just `java.util.ArrayDeque`? <https://docs.oracle.com/javase/7/docs/api/java/util/ArrayDeque.html|Javadoc>

it is not. <https://github.com/JetBrains/kotlin/blob/master/libraries/stdlib/src/kotlin/collections/ArrayDeque.kt>