Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I need to get unique web titles for my web sites AFTER doing my File::Find search. Below I get ALL Titles but just need the unique names. So If I have web title with the name "Index Home" I get hundreds of "Index Home" titles from my file find. I really only need one output or match of "Index Home" then move onto next unique output and so on. So below script prints: 
Title = Index Home
Title = Index Home
Title = Index Home
Title = Index Home 
Title =  Home Page
Title =  Next Page
Title =  Next Page
Title =  Next Page

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I really need the output to show distinct output of the results such as: 
Title = Index Home
Title = Home Page
Title = Next Page

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Here is my attempt. Can someone advise how I can do this??? 
use File::Find;
sub wanted
{
 if( $_ =~ /\.html?$/)
 {
   my $name = $File::Find::name;
   open ( F, $name ) or die "$!: $name\n";
   while($line = <F>)
   {
      if($line =~ /<title>(.+)<\/title>/i)
      {
      print "Title = $1\n";
      }
   }
close F;
 }
}
find( \&wanted, "/unixpath/webfiles" );

[download]

Replies are listed 'Best First'.
Re: Getting unique data from search.
by Wonko the sane (Deacon) on Nov 14, 2002 at 14:43 UTC
    Try declaring a %seen hash outside your sub, and change the print line to this.
    That should give you what youa re looking for. 
    print "Title = $1\n" unless $seen{$1}++;

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    P.S. Doesnt look like you are using strict.

    Wonko

[reply]
[d/l]
      this still not working, any suggestions? 
      use File::Find;


  sub wanted
  {
   if( $_ =~ /\.html?$/)
   {
     my $name = $File::Find::name;
     open ( F, $name ) or die "$!: $name\n";
     while($line = <F>)
     {
        if($line =~ /<title>(.+)<\/title>/i)
        {
        print "Title = $1\n";
        }
     }
  close F;
   }
  }
  find( \&wanted, "/unixpath/webfiles" );
print "title = $1\n" unless $seen{$1}++;

      [download]
[reply]
[d/l]
        You didn't follow his advice; he said "change the print statement." Not "add this at the bottom." The code should look like this: 
          use strict;
  use File::Find;

  my %seen;

  sub wanted
  {
   if ( /\.html$/)
   {
     open F, "< $File::Find:name" 
        or die "read $File::Find::name: $!\n";
     local $_;
     while (<F>)
     {
        if ( /<title>(.*?)<\/title>/si )
        {
           print "Title = $1\n" unless $seen{$1}++;
        }
     }
     close F;
   }
  }

  find( \&wanted, "/unixpath/webfiles" );

        [download]

        jdporter
        ...porque es dificil estar guapo y blanco.

[reply]
[d/l]
Re: Getting unique data from search.
by Callum (Chaplain) on Nov 14, 2002 at 14:42 UTC
    Store all the titles you get in a hash then suck them out with keys.
[reply]
Re: Getting unique data from search.
by Three (Pilgrim) on Nov 14, 2002 at 16:30 UTC
    Simpliy put all titles in a hash as key then print out all keys.
    This will elminate all duplicates.
    use File::Find;

my %titles;

sub wanted
{
 if( $_ =~ /\.html?$/)
 {
   my $name = $File::Find::name;
   open ( F, $name ) or die "$!: $name\n";
   while($line = <F>)
   {
      if($line =~ /<title>(.+)<\/title>/i)
      {
         $titles{$1} = " ";
      }
   }
close F;
 }
 foreach my $key (keys %titles) { print "Title = $key\n"; }
}


find( \&wanted, "/unixpath/webfiles" );

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[reply]
[d/l]

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