11.3 Exercises

1. How can you tell if an object is a tibble? (Hint: try printing mtcars, which is a regular data frame).
2. In your console print the built-in data frame airquality. Now convert airquality to a tibble, print it in your console and compare the difference.
3. Install the nycflights13 package and print off the data frame flights contained within this package. Now convert flights to a tibble, print it in your console and compare the difference.

참고 자료

• http://uc-r.github.io/tibbles
• https://misdb.github.io/R/R-for-Data-Management/df-tibble-factor.html#tibble