On Mon, Nov 10, 2008 at 09:52, Travis Thornhill
<[EMAIL PROTECTED]> wrote:
> Is there such a thing?
>
> I'm trying to take a HoH and make a reference to a sub-part of the hash.
>
> This doesn't work:
>
> my %sub_hash = $main_hash{'sub_hash'};
>
> I get the following error:
> Reference found where even-sized list expected at ./my_buggy_program line 30.
>
> Any quick tips on how to reference and assign this sub-hash?
snip
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
my %name_to_num = (
one => 1,
two => 2,
three => 3,
four => 4,
five => 5,
six => 6
);
#get keys whose values are odd
my @keys = grep { $name_to_num{$_} % 2 } keys %name_to_num;
#make a hash of the odd keys and values with a hash slice
my %odd_name_to_num;
@[EMAIL PROTECTED] = @[EMAIL PROTECTED];
print Dumper \%name_to_num, \%odd_name_to_num;
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
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