| complete | Complete a data frame with missing combinations of data. |
| crossing | Expand data frame to include all combinations of values |
| drop_na | Drop rows containing missing values |
| expand | Expand data frame to include all combinations of values |
| extract | Extract one column into multiple columns. |
| fill | Fill in missing values. |
| full_seq | Create the full sequence of values in a vector. |
| gather | Gather columns into key-value pairs. |
| nest | Nest repeated values in a list-variable. |
| nesting | Expand data frame to include all combinations of values |
| population | World Health Organization TB data |
| replace_na | Replace missing values |
| separate | Separate one column into multiple columns. |
| separate_rows | Separate a collapsed column into multiple rows. |
| smiths | Some data about the Smith family. |
| spread | Spread a key-value pair across multiple columns. |
| table1 | Example tabular representations |
| table2 | Example tabular representations |
| table3 | Example tabular representations |
| table4a | Example tabular representations |
| table4b | Example tabular representations |
| table5 | Example tabular representations |
| uncount | "Uncount" a data frame |
| unite | Unite multiple columns into one. |
| unnest | Unnest a list column. |
| who | World Health Organization TB data |