The UCLA Department of Statistics and the Center for Social Statistics presents:

Programming data science with R & the tidyverse

Tidy evaluation is a new framework for non-standard evaluation that
will be used throughout tidyverse. In this talk, I’ll introduce you to
the problem that tidy eval solves, illustrated with examples of the
various approaches used in R. I’ll then explain the most important
components so that you can start writing your own functions instead of
copying and pasting tidyr and dplyr code. I’ll finish with a small
shiny app that shows how tidy eval is a natural fit for handling user
input.

Hadley Wickham, RStudio
http://hadley.nz/