An R data.table cookbook

For my precon on R at the end of the month I’m working on the takeaway — the handout. This’ll be thing that makes the training day able to be put into practice immediately, and refills all those drink and sleep depleted neurons back up with R knowledge.

One of the things is a simple data.table cookbook. If you’re a data.table user, what other tasks do you think should be on there? You can comment here, on the code, or even make suggestions and submitting them with a pull request