I was looking through the code for Net::FTP and I noticed something that looks like a typeglob reference inside the first key to a multi-dimensional hash: 
 my $ftp = $pkg->SUPER::new(PeerAddr => $peer, 
                PeerPort => $arg{Port} || 'ftp(21)',
                Proto    => 'tcp',
                Timeout  => defined $arg{Timeout}
                        ? $arg{Timeout}
                        : 120
               ) or return undef;

 ${*$ftp}{'net_ftp_host'}     = $host;        # Remote hostname
 ${*$ftp}{'net_ftp_type'}     = 'A';        # ASCII/binary/etc mode
 ${*$ftp}{'net_ftp_blksize'}  = abs($arg{'BlockSize'} || 10240);

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Would someone mind explaining to me the semantics of this? Thanks in advance.

In reply to Please explain ${*$ftp}{'net_ftp_host'} = $host; # Remote hostname by Anonymous Monk

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