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Top Forums Shell Programming and Scripting Query related to references in array in Perl Post 302700265 by balajesuri on Thursday 13th of September 2012 07:32:00 AM
Old 09-13-2012
You cannot do $rr++ in perl like the way you can in C.
Perl offers a different way of accessing the subsequent elements of an array through reference variables. If you didn't already know this, take a look at the sample below:

For e.g.,
Code:
#! /usr/bin/perl -w
use strict;

my @array = (10, 20);
my $rarray = \@array;
print "@{ $rarray }[0]\n";
print "@{ $rarray }[1]\n";

 

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RDF::Helper::RDFRedland::Query(3pm)			User Contributed Perl Documentation		       RDF::Helper::RDFRedland::Query(3pm)

NAME
RDF::Helper::RDFReland::Query - Perlish convenience extension for RDF::Redland::Query SYNOPSIS
my $model = RDF::Redland::Model->new( RDF::Redland::Storage->new( %storage_options ) ); my $rdf = RDF::Helper->new( Namespaces => \%namespaces, BaseURI => 'http://domain/NS/2004/09/03-url#' ); my $q_obj = $rdf->new_query( $sparql_text, 'sparql' ); # arrays while ( my $row = $q_obj->selectrow_arrayref ) { # $row is an array reference. } # hashes while ( my $row = $q_obj->selectrow_hashref ) { # $row is a hash reference. } DESCRIPTION
RDF::Helper::RDFRedland::Query is the object retuned from RDF::Helper's new_query() method when using RDF::Redland as the base interface class. This object provides everything that an instance of RDF::Redland::Query offers, plus the convenience methods detailed below. METHODS
selectrow_arrayref Returns each row as a Perl array references. The order of the array's indices will correspond to the order of the variable bindings in the query. selectrow_hashref Returns each row as a Perl hash references. The keys in the hash will have the same names as the variable bindings in the query. AUTHOR
Kip Hampton, khampton@totalcinema.com COPYRIGHT
Copyright (c) 2004 Kip Hampton. =head1 LICENSE This module is free sofrware; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
RDF::Helper RDF::Redland::Query. perl v5.14.2 2011-06-24 RDF::Helper::RDFRedland::Query(3pm)
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