There are three problems.

1) You can make a reference out of hashes, arrays, scalars, functions, code, globs/IO and constants, but you can NOT create references to hash elements or array elements.
$ptr = \$hash{'name'};
is the same as
$ptr = \($hash{'name'});
which (in this case) is the same as
$ptr = \1;
which is a reference to a constant. Wouldn't
$key = 'name'; print $hash{$key};
suffice?

2) "$_" can be written as simply $_.

3) Do you think that loop will overwrite the value at $hash{'name'}? Numbers are automatically converted to strings and become just another key:

$hash{'name'} = 1;
$hash{0} = 2;
$hash{1} = 3;
$hash{'1'} = 4;

$\=$/;    # Adds "\n" to every print.
$,=", ";  # Seperate printed fields with commas.

print(keys(%hash));    # prints: name, 0, 1 (in random order)
print($hash{'name'});  # prints: 1
print($hash{0});       # prints: 2
print($hash{1});       # prints: 4
print($hash{'1'});     # prints: 4

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In reply to Re: pointer memory and dynamic memory by ikegami
in thread pointer memory and dynamic memory by pmtolk

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