What can I get by filtering URLs through the Perl URI module?

Question

I get something when I transform mine $urlas follows $url = URI->new( $url ):?

#!/usr/bin/env perl
use warnings; use strict;
use 5.012;
use URI;
use XML::LibXML;

my $url = 'http://stackoverflow.com/';
$url = URI->new( $url );

my $doc = XML::LibXML->load_html( location => $url, recover => 2 );
my @nodes = $doc->getElementsByTagName( 'a' );
say scalar @nodes;

Answer 1

the constructor of the URI module will clear the URI for you - for example, correctly output characters that are not valid for building a URI (see URI :: Escape ).

Answer 2

URI module as several advantages:

• It normalizes the URL for you.
• It can resolve relative urls
• It can detect invalid URLs (although you need to disable messy bits)
• URL-, .

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Answer 3

, , $url = URI->new( $url ); $url , URI (, , ), , URI. , XML::LibXML, , , URI URL-, .