3 ms·

Almost always faster, actually. https://github.com/Rdatatable/data.table/wiki/Benchmarks-:-Grouping https://github.com/Rdatatable/data.table/wiki/Benchmarks-:-

• RosanaAnaDana 7y ago
  I was going to make this point, but yeah. The only thing I think people have a bit of a time with is how you do operations in data.table. If you are coming from plyr/dplyr, the transition can be difficult. However, I've found that the more I do, the more I prefer it, inspite of the fact that the main reason I use dt over tidy is the phenomenal performance gain.