print join "+", @{$r}{@l}

[download]

The general rule is that when dealing with references you can replace a hash name with {$ref}. So @hash{@keys} becomes @{$ref}{@keys}.

--
<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Hash slice from a hashref by davorg
in thread Hash slice from a hashref by Random_Walk

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