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Perl Tutorial Book

5.5 Slices

It turns out you can slice hashes just like you were able to slice arrays. This can be useful if you need to extract a certain set of values out of a hash into a list.

use strict;
my %table = qw/schmoe joe smith john simpson bart/;
my @friends = @table{'schmoe', 'smith'};   # @friends has qw/joe john/

Note the use of the @ in front of the hash name. This shows that we are indeed producing a normal list, and you can use this construct in any list context you would like.

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