data.table-class {data.table} | R Documentation

## S4 Definition for data.table

### Description

A `data.table` can be used in S4 class definitions as either a parent class (inside a `contains` argument of `setClass`), or as an element of an S4 slot.

### Author(s)

Steve Lianoglou

### See Also

`data.table`

### Examples

    ## Used in inheritence.
    setClass('SuperDataTable', contains='data.table')

    ## Used in a slot
    setClass('Something', representation(x='character', dt='data.table'))
    x <- new("Something", x='check', dt=data.table(a=1:10, b=11:20))

[Package data.table version 1.9.6 Index]