Re^3: XML::Parser - Code Reference Error?

my @array = (1, 2, 7, 10);
my $array_ref = \@array;

print $array[2]; # prints 7
print $array_ref->[2]; # prints 7 (difference is the -> )
[download]

bless basically means that it's not just a reference, it's a reference to an object of some class.

Read the documentation for Data::Dumper - it's a great tool to see how these complex data structures are built.

Comment on Re^3: XML::Parser - Code Reference Error? Download Code

Replies are listed 'Best First'.
Re^4: XML::Parser - Code Reference Error? by awohld (Hermit) on Jun 10, 2005 at 06:11 UTC
So I'm trying to print from this array reference, but I'm missing something. `#!/usr/local/bin/perl -w use strict; use CGI::Carp qw(fatalsToBrowser); use XML::Parser; use CGI; use Data::Dumper; my $q = CGI->new(); print $q->header(); my $parse = new XML::Parser(Style => 'Objects'); my $address = "<LOC><HNO></HNO><STN>Eagle Way</STN><MCN>Gotham City</M +CN></LOC>"; my $tmp = $parse->parse($address); print $tmp->[0][1];` [download] So I'm taking the array reference created by $parse->parse($address) and storing it in $tmp. Then I'm trying to print from the array reference but I get an error saying that $tmp isn't an array refernce. What am I missing?	[reply] [d/l]
Re^5: XML::Parser - Code Reference Error? by spurperl (Priest) on Jun 10, 2005 at 06:25 UTC
I'm not sure that XML::Parser is what you need here, at least not for the task you're presenting. See an example of the usage of XML::Parser here. Perhaps all you need is XML::Simple ? `#!/usr/local/bin/perl -w use warnings; use strict; use XML::Simple; use Data::Dumper; my $xs = new XML::Simple(KeepRoot => 1); my $address = "<LOC><HNO></HNO><STN>Eagle Way</STN><MCN>Gotham City</M +CN></LOC>"; my $ref = $xs->XMLin($address); print Dumper($ref); # to print "Eagle way" print $ref->{LOC}->{STN};` [download]	[reply] [d/l]
Re^5: XML::Parser - Code Reference Error? by holli (Abbot) on Jun 10, 2005 at 07:22 UTC
In "Objects"-Style, XML::Parser returns to you a tree of objects (thus the name) that represent the XML you have parsed. That is similar to DOM, but simpler. Have a look at the output of `print Dumper ($tmp);` [download] It's a quite complex structure: Read more... (2 kB) Thus, to access the values you want, you have to write: `print $tmp->[0]->{Kids}->[1]->{Kids}->[0]->{Text}, "\n", $tmp->[0]->{Kids}->[2]->{Kids}->[0]->{Text};` [download] which produces `Eagle Way Gotham City` [download] Or in a loop: `for ( @{$tmp->[0]->{Kids}} ) { print $_->{Kids}->[0]->{Text}, "\n"; }` [download] holli, /regexed monk/	[reply] [d/l] [select]