what was the reason that kotlin introduced an own ...

# random

[robstoll]

what was the reason that kotlin introduced an own Comparable interface (I only realised today that it's not the java interface when I tried to consume an API from another JVM language)

[robstoll]

or to put it differently, why is it not an expected interface in common and a typealias in jvm?

[Hamza]

Possibly relevant? https://stackoverflow.com/questions/45616548/kotlin-why-use-abstract-classes-vs-interfaces

[robstoll]

in what regard, java has defined it as interface and kotlin has also defined it as interface?

[robstoll]

hm... maybe it's only intellij showing me kotlin.Comparable because I am not able to instantiate it

[Hamza]

ohh, you meant the actual kotlin.Comparable as in the actual interface. my bad

[robstoll]

ok, I had a look at the bytecode kotlin.Comparable is not in there, it was only intellij showing me this

[gildor]

@robstoll Take a look on official Java interop doc, it explains how it works, it’s the same case as for List interface in Java and Kotlin or for kotlin and java String:
https://kotlinlang.org/docs/reference/java-interop.html#mapped-types