Or, building top-down instead of bottom-up: 
$_ = 'a1:a2:a3=foo';
my ($key, $val) = split(/=/);
my @keys = split /:/, $key;
my %hash;
my $href = \%hash;
$href = $href->{shift @keys} = (@keys>1) ? {} : $val while @keys;
print Dumper(%hash);

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The PerlMonk tr/// Advocate

In reply to Re: Re: List Values As Multidimensional Hash Keys by Roy Johnson
in thread List Values As Multidimensional Hash Keys by joule

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