Statistics::R::REXP - base class for R objects (SEXPs)
SEXP
version 1.0002
use Statistics::R::REXP; # we usually get REXPs from an RDS file: my $rexp = Statistics::R::IO::readRDS('file.rds'); # REXPs are stringifiable say $rexp; # REXPs can be converted to the closest native Perl data type print $rexp->to_pl;
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.
new
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.
NULL
REXP
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.
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.
Statistics::REXP::Vector
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.
CLASS_NAME
base::inherits
REXP overloads the stringification, eq and ne methods; subclasses further specialize for their types if necesssary.
eq
ne
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.
is_*
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 <cubranic@stat.ubc.ca>
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.
cpanm
cpanm Statistics::R::IO
CPAN shell
perl -MCPAN -e shell install Statistics::R::IO
For more information on module installation, please visit the detailed CPAN module installation guide.