Aaron C. de Bruyn <mailto:[EMAIL PROTECTED]> wrote:
: In the Perl documentation (perlintro) it says that you can find out
: the number of elements in an array using the following syntax:
:
: print $myvar[$#mmyvar];
No. That prints the value of the last element of @myvar. The number
items in the array is the scalar evaluation of @myvar.
print scalar @myvar;
: I am running into a problem when I try to find the number of elements
: in an array that is being returned from an object.
:
: I am using XML::Simple to parse an XML document, and have the
: following snippet of code giving me trouble:
:
: print $#xml->{'channel'};
$xml is not an array. It is (most likely) an object. Adding # is not
useful. If $xml->{channel} is an array reference then the total elements
are printed below. Since 'print' uses list context we need to specify
scalar context.
print scalar @{ $xml->{channel} };
: for ($i=0; $i <= $#xml->{'channel'}; $i++) {
: print $xml->{'channel'}[$i];
: }
In perl, we usually can iterate an array without using its indices.
foreach my $channel ( @{ $xml->{channel} } ) {
print $channel;
}
OR:
print @{ $xml->{channel} };
HTH,
Charles K. Clarkson
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