On Wed, Oct 15, 2008 at 03:17, Marko Krstic <[EMAIL PROTECTED]> wrote:
> Hello,
>
> What is the best (shortest) way to define a hash where different keys have
> same values:
>
> %my_hash = { 1 => 'something', 2 => 'something', 3 => 'something else'};
>
> Is there a way to write something like:
>
> %my_hash = { 1,2 => 'something', 3 => 'something else', etc...}
>
> Thanks
I can think of two ways off the top of my head: use map* to build a
list (my prefered way) or use hash slice** notation and the repetition
operator***.
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
#exploit the list nature of hash assignment
my %a = (
one => 1,
two => 2,
map { $_ => 3 } qw<three four five six seven>
);
#use a hash slice
my %b = (
one => 1,
two => 2,
);
@b{qw<three four five six seven>} = (3) x 5;
print
"a:\n", Dumper(\%a), "\n",
"b:\n", Dumper(\%b), "\n",
* http://perldoc.perl.org/functions/map.html
** http://perldoc.perl.org/perldata.html#Slices
*** http://perldoc.perl.org/perlop.html#Multiplicative-Operators
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
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