Good question. :) For this particular case, i probably should have used your second snippet (take a reference to the array instead of copying it into a new anonymous one). Consider these: 
use Data::Dumper;

my @array = qw(foo bar baz);
my %hash;

for (1..5) {
   my @array = qw(foo bar baz);
   $hash{$_} = \@array;
   undef @array;
}
print Dumper \%hash;

for (1..5) {
   my @array = qw(foo bar baz);
   $hash{$_} = [@array];
   undef @array;
}
print Dumper \%hash;

[download]
I usually stick with an explicit copy since it tends to keep me out of trouble, but there are times when you do want to take a reference, and you just have to be careful when you do.

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In reply to 3Re: passing information into a hash by jeffa
in thread passing information into a hash by Anonymous Monk

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