Ooops need dplyr here

functions.Rmd

@@ -749,10 +749,13 @@ dim(x)
 
 And we can still use it in a pipe:
 
+```{r, include = FALSE}
+library(dplyr)
+```
 ```{r}
 mtcars %>% 
   show_missings() %>% 
-  dplyr::mutate(mpg = ifelse(mpg < 20, NA, mpg)) %>% 
+  mutate(mpg = ifelse(mpg < 20, NA, mpg)) %>% 
   show_missings() 
 ```