You can take a functional approach and chain grep and map on a single line:

#! perl
use strict;
use warnings;
use Data::Dump;

my %h1 = (catastrophe => 1, cataclysm => 2, dogma => 3);
my %h2 = map { $_ => $h1{$_} } grep { /^cat/ } keys %h1;
dd %h2;

[download]

Output:

 1:33 >perl 542_SoPW.pl
("catastrophe", 1, "cataclysm", 2)

 1:37 >

[download]

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Is there a simple syntax to logically slice a hash? by Athanasius
in thread Is there a simple syntax to logically slice a hash? by misterperl

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