Extension of data.frame. i and j expressions, keys and binary search.

Documentation for package ‘data.table’ version 1.2

%between%	Convenience function for range subset logic.
%like%	Convenience function for calling regexpr.
as.data.table	Enhanced data.frame
between	Convenience function for range subset logic.
CJ	Creates a Join data table
data.table	Enhanced data.frame
DT	Enhanced data.frame
Extract.data.table	Query a data table
is.data.table	Enhanced data.frame
J	Creates a Join data table
last	Last item of an object
like	Convenience function for calling regexpr.
setkey	Create key on a data table
SJ	Creates a Join data table
tables	Display all objects of class 'data.table'
test.data.table	Runs a set of tests.
[.data.table	Query a data table