::: {.cell hash='03_Data_preprocessing_cache/revealjs/unnamed-chunk-26_6654e741cfc0c6b0b40912f3cd592993'}

```{.r .cell-code}
count(flights)
```

::: {.cell-output .cell-output-stdout}
```
# A tibble: 1 × 1
       n
   <int>
1 336776
```
:::
:::