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sub li { shift; @_ ? (scalar @_, &li) : (); } print li qw(a b c d e f g); # prints 654321
sub li { shift; @_ ? ($#_ + 1, &li) : (); } print li qw(a b c d e f g); # prints 654321
sub li { shift; @_ ? ($#_, &li) : (); } print li qw(a b c d e f g); # prints -1-1-1-1-1-1
use vars '$x'; sub li { ... @_ ? ($x, &li) : (); } print li qw(a b c d e f g); # prints gggggg
An Englishman in New York An American Werewolf in London An American in Paris The Innocents Abroad An Idiot Abroad Robinson Crusoe on Mars A Connecticut_Yankee in King Arthur's Court There and Back Again Travels into Several Remote Nations of the World
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