Jolan Rensen

Made a branch that restores the change again: https://github.com/Kotlin/dataframe/tree/restricted-add-dsl

From: https://youtrack.jetbrains.com/issue/KT-13198 We could try: ```kt @Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE") fun KProperty0.f(value: @kotlin.internal.NoInfer T) ``` This enforces T to come from the KProperty, not the value.

We miss an example for `Filter` in the documentation on the website indeed. Thanks

2 or later. It's not publicly visible, just a bit ugly and cumbersome

Also need to look into `move` for similar behavior.

could also provide a warning in the meantime

Small start: the common child of two classes can be found like this: ```kotlin /** @include [commonChild] */ internal fun commonChild(vararg classes: KClass): KClass = commonChild(classes.toList()) /** * Given the...

Seems like [ScalaReflection.scala](https://github.com/apache/spark/blob/branch-3.4/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala ) has now really deviated too far from [KotlinReflection.scala](https://github.com/Kotlin/kotlin-spark-api/blob/release/core/src/main/scala/org/apache/spark/sql/KotlinReflection.scala) requiring a major overhaul to function. Maybe it's time to try a new approach, such as https://github.com/Kotlin/kotlin-spark-api/issues/178 which...

> What would be the next step towards moving forward with this? The next step would be to investigate to find a new way to encode Kotlin Data Classes (both...

> So if I understood that correctly, we will be able to create spark Dataset from a kotlinx DataFrame? That's exactly what I wanted to do, because working with spark...