I’m very pleased to announce that dplyr 0.3 is now available from CRAN. Get the latest version by running:

install.packages("dplyr")

There are four major new features:

• Four new high-level verbs: distinct(), slice(), rename(), and transmute().
• Three new helper functions between, count(), and data_frame().
• More flexible join specifications.
• Support for row-based set operations.

There are two new features of interest to developers. They make it easier to write packages that use dplyr:

• It’s now much easier to program with dplyr (using standard evaluation).
• Improved database backends.

I describe each of these in turn below.

library(nycflights13) # Find all origin-destination pairs flights %>% select(origin, dest) %>% distinct() #> Source: local data frame [224 x 2] #> #> origin dest #> 1 EWR IAH #> 2 LGA IAH #> 3 JFK MIA #> 4 JFK BQN…