in reply to Getting Getopt::Long values into a hash

Are you looking for this?

$getoptret = $p->getoptions( \%my_hash, 'house', 'dog|d:s' );

If you want more control over where things are stored you could also do something like:

$getoptret = $p->getoptions(
                            'house'   => \$my_hash{house},
                            'dog|d:s' => \$my_hash{mutt},
  );

[download]

Edit: D'oh, too slow

Good Day,
    Dean

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Re^2: Getting Getopt::Long values into a hash
by jeanluca (Deacon) on Nov 08, 2005 at 14:19 UTC
    It only seems to work when I use it like:
    $getoptret = $p->getoptions(
                            'house'   => \$my_hash->{house},
                            'dog|d:s' => \$my_hash->{mutt},
  );

    [download]
    what is exactly the difference between $my_hash->{something} and $my_hash{something} ?

    Thanks a lot!
    Luca
[reply]
[d/l]

      It seems that you must have $my_hash as a hashref, rather than having a %my_hash. The arrow-form adds a dereference to the LHS value. In my example, #1 and #2 are equivalent:

      my $ref = { foo => "bar" };

print ${$ref}{"foo"};  #1  prints "bar"
print $ref->{"foo"};   #2  prints "bar"
print $ref{"foo"};     #3  prints ""
      # and under strictures throws a: 
      # "Global symbol "%ref" requires explicit package name"

      [download]

      $ref{"foo"} only returns a value if there is a hash named %ref.

[reply]
[d/l]
[select]
        I almost start my script with: my $my_hash = {} ; As far as I know this should create a hash reference ?!
        What exactly means 'dereference to the LHS value' ?
        When it comes to variables and references I often get confused!

        Thnx
        Luca
[reply]

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