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$a[$_] -= $b[$_] for 0..$#a;
$a[$_] -= $b[$_] for (),0..$#a;
$ perl -MO=Concise,-exec -e'1 for (),$x..$y'
1 <0> enter
c <2> leaveloop vK/2
d <@> leave[1 ref] vKP/REFC
-e syntax OK
0 - I'm a blankster
0 - My devices have no keyboard
0 - I use a chorded keyboard that transcends your concept of keys
26 - I need the other keys for Perl sigils!
31 - I write code in the original APL
31 - ß counts only as one letter!
∞ - I use an Optimus keyboard
ℵ1 - I reject your Latin-centric notion of letters
Results (34 votes),