ding-data-from-multiple-fil-6 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> read_csv(list.files("data", pattern = "similar", full.names = TRUE), na=".", show_col_types = FALSE) </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-data-from-multiple-fil-7 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> list.files(path = "data" , pattern = "sales" ) </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-d