Creates a join data.table
Fast overlap joins
Fast ifelse
Determine Duplicate Rows
Fast dcast for data.table
Faster match of character vectors
Coalescing missing values
S4 Definition for data.table
Copy an entire object
Enhanced data.frame
Optimisations in data.table
Fast CSV writer
Grouping Set aggregation for data tables
Rolling functions
Fast parallel sort
Convenience function for calling grep.
Fast melt for data.table
Obtain matching indices corresponding to patterns
data.table Printing Options
Generate unique row ids within each group
Number of rows affected by last update
First/last item of an object
Deprecated.
Makes one data.table from a list of many
Generate run-length type group id
Fast and friendly file finagler
Fast rank
Merge two data.tables
Set attributes of objects by reference
Change or turn off numeric rounding
Fast column reordering of a data.table by reference
Create key on a data.table
Coerce a data.table to data.frame by reference
Remove rows with missing values on columns specified
Set operations for data tables
Special symbols
Efficient transpose of list
Coerce lists and data.frames to data.table by reference
Over-allocation access
Fill missing values
Subsetting data.tables
Fast row reordering of a data.table by reference
Test assertions for equality, exceptions and console output
Display 'data.table' metadata
Runs a set of tests.
Fast lead/lag for vectors and lists
For use by packages that mimic/divert auto printing e.g. IRkernel and knitr
Data table utilities
Pretty print of time taken
Set or get number of threads that data.table should use
Split data.table into chunks in a list
strsplit and transpose the resulting list efficiently
Perform update of development version of a package
Address in RAM of a variable
Efficient xts to as.data.table conversion
Convert a data.table to a matrix
Coerce to data.table
Efficient data.table to xts conversion
Equality Test Between Two Data Tables
Integer based date class
Assignment by reference
Convenience functions for range subsets.