Combine DataFrame objects along their rows or columns, or merge them
Compare, order, tabulate vector-like objects
Compute summary statistics of subsets of vector-like objects
Combine objects along their ROWS or COLS
Some utility functions to operate on strings
Unlist the list-like columns of a DataFrame object
Some utility functions to operate on integer vectors
Apply a function over subsequences of 2 vector-like objects
Convert between parallel vectors and lists