Apply a function f repeatedly to different columns of a data.frame. Assumes that ellipsis arguments contain (only) one vector entry and that function f should be applied sequentially to each of these entries. Does not work with unquoted column names
Apply a function f repeatedly to different columns of a data.frame. Assumes that ellipsis arguments contain (only) one vector entry and that function f should be applied sequentially to each of these entries. Does not work with unquoted column names