Apply a function (or functions) across multiple columns
Do values in a numeric vector fall in specified range?
Efficiently bind multiple 'data.frame's by row and column
Cumulative versions of any, all, and mean
Fill in missing values with previous or next value
Filtering joins filter rows from 'x' based on the presence or absence of matches in 'y':
Default value for .drop argument of group_by
Count the number of unique values in a set of vectors
Extract the first, last or nth value from a vector
Peek at variables in the selection context
poorman: A Poor Man's Dependency Free Recreation of 'dplyr'
Subset columns using their names and types
Reduce multiple values down to a single value
Perform an operation with temporary groups