On 6/7/06, Ron Goral <[EMAIL PROTECTED]> wrote:
Merely referencing a key in a hash sets it into the hash, though with a
value of undef.
This turns out not to be the case. In Perl, merely referencing a key
in a hash doesn't change the hash. Some non-Perl hash implementations
do change the hash in those circumstances, though, so your confusion
is understandable.
my %last_name;
$last_name{'fred'} = 'flintstone'; # creates key 'fred' in hash
my $x = $last_name{'barney'}; # does not create key 'barney'
Cheers!
--Tom Phoenix
Stonehenge Perl Training
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
