Thanks all for your prompt responses. I don't understand why the address has been changed between "Sa:" and "Sb:" by assigning another anonymous hash. I expected "Sb:" would be the same as "Sa:", since i was using the same var. I changed the code a bit: 
sub do_something
{
    my $h = shift;

    print '1. do_something(): ' . $h . "\n";

    %{ $h } = ( a => 'alpha', b => 'beta' );

    print '2. do_something(): ' . $h . "\n";
    print Dumper( $h );
}

[download]
and it shows: 
hash = HASH(0x490d30)
1. do_something(): HASH(0x490d30)
2. do_something(): HASH(0x490d30)
{
  'a' => 'alpha',
  'b' => 'beta'
}
{
  'a' => 'alpha',
  'b' => 'beta'
}

[download]
The address is not changed ... the behaviour is not consistent to me :)

In reply to Re^2: hash question by duyet
in thread hash question by duyet

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