dereferncing a an array store in hash

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

Hi monks,

I have a hash and one of the key-vaules are $args{"my_key"}=["name1","name2"]

When I try to deference it I have to do this

$temp=$args{"my_key"};

@my_array=@$temp;

Why does not it work if I directly dereference it like below

@my_array=@$args{"my_key"};

#!/usr/bin/perl
%my_hash=('k1',"123","k2",["Bach","Bachi"]);
@my_aray=@$my_hash{"k2"};
print "First try \n";
print @my_aray;
print"Second try \n";
$temp=$my_hash{"k2"};
@my_aray=@$temp;
print @my_aray;
print "\n";
[download]

Output is

First try

Second try

BachBachi

Thanks in Advance!!

Comment on dereferncing a an array store in hash Download Code

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Re: dereferencing an array store in hash by toolic (Bishop) on Mar 15, 2011 at 19:08 UTC
This will work: `@my_aray = @{ $my_hash{"k2"} };` [download] See also: Using References use strict and warnings, to demystify why your output is missing the 1st Bach.	[reply] [d/l]
Re: dereferncing a an array store in hash by wind (Priest) on Mar 15, 2011 at 19:09 UTC
Add brackets to specify what you are dereferencing. If you were using strictures, you would've been alerted to the syntax error: 'Global symbol "$my_hash" requires explicit package name' `use strict; my %my_hash = ( k1 => "123", k2 => ["Bach", "Bachi"], ); my @my_array = @{$my_hash{"k2"}}; print @my_array;` [download]	[reply] [d/l]