in reply to Use of uninitialized value in subroutine entry at C:/Perl/lib/HTML/TreeBuilder.p m line 108.
Hello kanthsri, and welcome to the Monastery!
I re-formatted your code as follows:
#! perl use Modern::Perl; use LWP::Simple; use URI::Escape; use HTML::TreeBuilder; use Try::Tiny; my $look_for = "perl"; my $contents = get "http://www.amazon.com/s/ref=nb_sb_noss?url=search- +alias%3Dstripbooks&field-keywords=" . uri_escape($look_for); my $html = HTML::TreeBuilder->new_from_content($contents); for my $item ($html->look_down(id => qr/result_\d+/)) { # $item->dump; # find out structure of HTML my $author = try { $item->look_down(class => 'ptBrand')->as_trimme +d_text }; print "$author\n"; } $html->delete;
and ran it with the following result:
16:54 >perl 452_SoPW.pl by Randal L. Schwartz, brian d foy and Tom Phoenix by Tom Christiansen, brian d foy, Larry Wall and Jon Orwant Ph.D. by Tom Christiansen and Nathan Torkington by Randal L. Schwartz, brian d foy and Tom Phoenix by Johan Vromans by Joseph N. Hall, Joshua A. McAdams and brian d foy by Randal Schwartz, Tom Phoenix and brian d foy by David N. Blank-Edelman by brian d foy by Curtis Poe by Damian Conway by Paul E. Hoffman 16:56 >
What output do you get? In what way is the code “not executing” in your system?
Update: Just realised that the title answers my question! What version of HTML::TreeBuilder are you running? Mine is v5.01. What is line 108 in your version of this module?
Athanasius <°(((>< contra mundum | Iustus alius egestas vitae, eros Piratica, |
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Re^2: Use of uninitialized value in subroutine entry at C:/Perl/lib/HTML/TreeBuilder.p m line 108.
by kanthsri (Initiate) on Dec 26, 2012 at 07:25 UTC | |
by kanthsri (Initiate) on Dec 26, 2012 at 07:30 UTC | |
by Athanasius (Archbishop) on Dec 26, 2012 at 09:02 UTC | |
by Anonymous Monk on Dec 26, 2012 at 09:21 UTC |
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