NAME

Statistics::R::REXP::Null - the R null object

VERSION

This documentation refers to version 0.04 of the module.

SYNOPSIS

use Statistics::R::REXP;

my $null = Statistics::R::REXP::Null->new();
say $rexp->is_null;
print $rexp->to_pl;

DESCRIPTION

An object of this class represents the null R object (NILSXP). The null object does not have a value or attributes, and trying to set them will cause an exception.

METHODS

Statistics::R::REXP::Null inherits from Statistics::R::REXP and adds no methods of its own.

ACCESSORS

to_pl

The Perl value of NULL is undef.

attributes

Null objects have no attributes, so the attributes accessor always returns undef.

BUGS AND LIMITATIONS

Classes in the REXP hierarchy are intended to be immutable. Please do not try to change their value or attributes.

There are no known bugs in this module. Please see Statistics::R::IO for bug reporting.

SUPPORT

See Statistics::R::IO for support and contact information.

AUTHOR

Davor Cubranic, <cubranic at stat.ubc.ca>

LICENSE AND COPYRIGHT

Copyright 2014 University of British Columbia.

See Statistics::R::IO for the license.