in reply to Re^2: Arrow operator usage in perl
in thread Arrow operator usage in perl

The return $hwwns; at the end of your code fragment suggests the code is part of a subroutine. Was a hash reference passed to the subroutine, e.g., do you see something like my ($hwwns) = @_; at the top of the subroutine?

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Re^4: Arrow operator usage in perl
by dvinay (Acolyte) on Nov 09, 2013 at 19:20 UTC

    this is my Code block may be u can help me out of this 

    
sub gethpux1131hwwns {
        my $hwwns;
        my $hwpath;
        my $hwwn;
        my @fcdevices = `ioscan -kfnNC fc | grep "/dev/" 2>/dev/null`;
        foreach my $fcdev(@fcdevices) {
                my @fcdump = `fcmsutil $fcdev`;
                foreach my $ln (@fcdump) {
              if($ln =~ /Hardware Path is/)
              {
              (my $pathname, $hwpath) = split('= ', $ln);
                        chomp($hwpath);
              }
             elsif($ln =~ /N_Port Port World Wide Name/)
               {
               (my $hwwnname, $hwwn) = split('= ', $ln);
                           chomp($hwwn);
               }
             }
               $hwwns->{$hwpath} = $hwwn;
        }
        return $hwwns;
}

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[d/l]

      Ah! The subroutine only returns a hash reference, like the following:

      use strict;
use warnings;
use Data::Dumper;

my $hashRef = getHashRef();

print Dumper \$hashRef;
print $hashRef->{'Hello'};

sub getHashRef {
    my $hwwns;
    $hwwns->{'Hello'} = 'world!';
    return $hwwns;
}

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      Output:

      $VAR1 = \{
            'Hello' => 'world!'
          };
world!

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