in reply to Converting Binary to hex

$s = '10101010'; 

printf "%x\n",  eval "0b$s";;
aa

printf "%x\n", ord pack 'B*', $s;;
aa

printf "%x\n", unpack 'V', pack 'B32', $s;;
aa

printf "%x\n", unpack 'S', pack 'B16', $s;;
aa

printf "%x\n", unpack 'C', pack 'B8', $s;;
aa

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In Section Seekers of Perl Wisdom