Statistics::R::REXP - base class for R objects (SEXPs)
# we usually get REXPs from an RDS file:
my $rexp = Statistics::R::IO::readRDS('file.rds');
# REXPs are stringifiable
# REXPs can be converted to the closest native Perl data type
An object of this class represents a native R object. This class cannot be directly instantiated (it will die if you call new on it), because it is intended as a base abstract class with concrete subclasses to represent specific object types.
An R object has a value and an optional set of named attributes, which themselves are R objects. Because the meaning of 'value' depends on the actual object type (for example, a vector vs. a NULL, in R terminology), REXP does not provide a generic value accessor method, although individual subclasses will typically have one.
Returns a hash reference to the object's attributes.
Returns the name of the corresponding R SEXP type, as listed in SEXPTYPE.
Returns Perl representation of the object's value. This is an abstract method; see concrete subclasses for the value returned by specific object types, as well as the way to access the R (-ish) value of the object, if such makes sense.
Returns TRUE if the object is an R NULL object. In REXP's class hierarchy, this is the case only for Statistics::REXP::Null.
Returns TRUE if the object is an R vector object. In REXP's class hierarchy, this is the case only for Statistics::REXP::Vector and its descendants.
Returns TRUE if the object is an instance of R S3-style class CLASS_NAME, in the same fashion as the R function base::inherits.
REXP overloads the stringification, eq and ne methods; subclasses further specialize for their types if necesssary.
Classes in the REXP hierarchy are intended to be immutable. Please do not try to change their value or attributes.
More is_* accessors should be added.
There are no known bugs in this module. Please see Statistics::R::IO for bug reporting.
See Statistics::R::IO for support and contact information.
Davor Cubranic <firstname.lastname@example.org>
This software is Copyright (c) 2017 by University of British Columbia.
This is free software, licensed under:
The GNU General Public License, Version 3, June 2007
To install Statistics::R::IO, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.