Function pre_eval_data_frame 

fn pre_eval_data_frame(
    args: &[Arg],
    env: &Environment,
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Construct a data frame from named or unnamed column vectors.

@param … vectors, factors, matrices, or data frames to combine as columns @param row.names character or integer vector of row names (optional) @param stringsAsFactors if TRUE, convert character columns to factors (default FALSE) @return a data frame (list with class “data.frame”)