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

Hi, I ma trying to retrive the array value from a hash using the refernce 
my $event_method=$event_ref->[0];
--$event_ref is an array reference
#print $event_method;
my @file_details=@{$event_file -> {$event_method}};
--$event_file is an hash reference
print "@file_details";

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if i hard code the value to 
my @file_details=@{$event_file -> {gsm}};

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i get the desired out put. I have printed the $event_method value and that also retrived correctly. I am not bale to debug the error please guide me. Thanks in advance

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Re: retriving array value from hash refernce
by jethro (Monsignor) on Jun 30, 2010 at 11:22 UTC

    Maybe that value you store into $event_method has still a "\n" value at the end (for example if you read it from a file and didn't use chomp) or some other invisible character in it.

    The best way to find out things like that is to use Data::Dumper, i.e.:

    use Data::Dumper;
$Data::Dumper::Useqq=1; #invisible characters are shown
print Dumper($event_method);

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[d/l]
      hi use of Dumper gave me out put 
      test_script.pl
$VAR1 = "gms";

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      which shows it is correclty retrived rt?
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[d/l]
        yes, but it is "gms" and not "gsm" which is what you gave as the correct string
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