From rows to data frame

[CarloMariaProietti]

Solving issue #1098

[Jolanrensen]

@koperagen do you think it will cause issues in combination with #1465 ? or should this be good to go?

[koperagen]

@koperagen do you think it will cause issues in combination with #1465 ? or should this be good to go?

No issues, but in Iterable.toDataFrame we'll treat Map as value type and won't unfold it. I think it makes sense as a default

So results would be,

1. With this new function
   listOf(mapOf("a" to 123)).toDataFrame() =>

a: Int

2. With generic toDataFrame and deep conversion

class MapContainer(val myMap: Map<String, *>)

listOf(MapContainer(mapOf("a" to 123))).toDataFrame(maxDepth = 2)

=>

myMap: Map<String, *>

3. Later Map can be converted
   df.convert { myMap }.with { it.toDataRow() }

[Jolanrensen]

@koperagen and what about listOf(myMap, 1, "").toDataFrame()? This is what I'm most concerned about