It can be a burden to indicate every column that should be filled. When there are no columns that should not be filled, for instance because there are no other columns with missings, it is obnoxious to still have to indicate which columns to fill.
Consider throwing a warning when no columns are specified.
It can be a burden to indicate every column that should be filled. When there are no columns that should not be filled, for instance because there are no other columns with missings, it is obnoxious to still have to indicate which columns to fill.
Consider throwing a warning when no columns are specified.