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0:59 >perl -Mstrict -MData::Dump -MConst::Fast -we "use constant A => + 12; const our $B => 13; my %h = ( (A) => 'twelve', $B => 'thirteen') +; dd \%h;" { 12 => "twelve", 13 => "thirteen" } ... -e syntax OK 0:59 >
use constant DEBUG => 0; ... perform_some_debugging_operation() if DEBUG; ...