Cannot rename ColumnGroup and its children at the same time #405
Description
As the title says, renaming of columns inside column groups cannot be done if the column group itself is renamed in the same call.
For instance:
val myDf = dataFrameOf("a", "b", "c")(1, 2, 3).group("a", "b", "c").into("letters") //⌌---------------------⌍ //| | letters| //|--|------------------| //| 0| { a:1, b:2, c:3 }| //⌎---------------------⌏ myDf.rename { all().recursively() // or using the old notation allDfs(includeGroups = true) }.into { it.name + "_renamed" } //⌌---------------------⌍ //| | letters_renamed| //|--|------------------| //| 0| { a:1, b:2, c:3 }| //⌎---------------------⌏It needs to be done in two separate operations, like:
myDf .rename { cols { !it.isColumnGroup() }.recursively() }.into { it.name + "_renamed" } .rename { cols { it.isColumnGroup() }.recursively() }.into { it.name + "_renamed" } //⌌--------------------------------------------⌍ //| | letters_renamed| //|--|-----------------------------------------| //| 0| { a_renamed:1, b_renamed:2, c_renamed...| //⌎--------------------------------------------⌏From a user-perspective, this makes little sense and we should probably find a way to fix this.