# A tibble: 3 x 9
      a     b     c     d      e          f                   g         h          i
  <dbl> <int> <lgl> <chr> <fctr>     <date>              <dttm>    <list>     <list>
1   1.0     1  TRUE     a      a 2015-12-10 2015-12-09 10:51:35 <int [1]> <list [2]>
2   2.5     2 FALSE     b      b 2015-12-11 2015-12-09 10:51:36 <int [1]> <list [1]>
3    NA    NA    NA  <NA>   <NA>         NA                  NA <int [1]> <list [1]>
