Kopilov Aleksandr

@koperagen, @nikitinas, I want your opinion about the next detail. In Arrow schema we have `nullable` flag but it's value does not depend on column content. And we may get...

Thank you for highlighting `Infer` enum. It can probably be used as parameter. > Hm, i would prefer 1 as a default OK, thanks for sharing. About 2, I expected...

I suggest next mapping if use `Infer` as a parameter: * `Infer.Nulls` — set nullable flag in DataFrame schema if and only if there are null values in the column,...

Implemented in #129 `Narrowing` was renamed to `Keeping` because on schema ignoring we can get no nulls in nullable as well as some nulls in not nullable.

Hi @holgerbrandl I am going to make KranglArrow conversion for my customer's project, later in can be embedded to Krangl

Hello @koperagen, > right now i seem to lack general understanding, so i'll review it again a bit later. You cal look [similar module](https://github.com/holgerbrandl/krangl/blob/master/src/main/kotlin/krangl/ArrowIO.kt) in krangl. And ask me about...

> possible warnings a sealed class Started working on this

@koperagen @Jolanrensen @nikitinas Hi, this branch is upgraded. Evaluate please :)

Hello @Jolanrensen, OK, thanks

@jbytecode Thanks! In new version I converted public `ROutputParser` class to interface (may be you can find more backward compatible way for adding new implementation), look [this commit](https://github.com/Kopilov/rcaller/commit/dce1e81c1d8a5aefafe03550f1ffe870dc96aab7). Other changes...