constructive (version 1.1.0)

opts_data.table: Constructive options for class 'data.table'

Description

These options will be used on objects of class 'data.table'.

Usage

opts_data.table(
  constructor = c("data.table", "next", "list"),
  ...,
  selfref = FALSE,
  recycle = TRUE
)

Value

An object of class <constructive_options/constructive_options_data.table>

Arguments

constructor

String. Name of the function used to construct the object, see Details section.

...

Additional options used by user defined constructors through the opts object

selfref

Boolean. Whether to include the .internal.selfref attribute. It's probably not useful, hence the default, waldo::compare() is used to assess the output fidelity and doesn't check it, but if you really need to generate code that builds an object identical() to the input you'll need to set this to TRUE.#'

recycle

Boolean. Whether to recycle scalars to compress the output.

Details

Depending on constructor, we construct the object as follows:

• "data.table" (default): Wrap the column definitions in a data.table() call.

• "next" : Use the constructor for the next supported class. Call .class2() on the object to see in which order the methods will be tried.

• "list" : Use list() and treat the class as a regular attribute.