So, this is a curious construct, which I'd be interested in hearing some deep esoteric explanation for (basically, explain the assignment of the hash: @b{@f}=(); ). How does the hash get assigned by using the list symbol on it?

$> perl -M'Data::Dumper' -le '@f=("f1","f2","f3"); my %b; @b{@f}=();pr
+int Dumper(\@f); print Dumper(\%b)'
$VAR1 = [
          'f1',
          'f2',
          'f3'
        ];

$VAR1 = {
          'f1' => undef,
          'f3' => undef,
          'f2' => undef
        };
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