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my (@a1,@a2) = ([1,2,3],[3,2,1]);
my (@a1,@a2) = ([1,2,3,4,5,6,7],[7,6,5,4,3,2,1]); print Dumper(@a1), Dumper(@a2);
$VAR1 = [ 1, ... 2, 1 ];
print "a1\n", Dumper(@a1), "a2\n", Dumper(@a2);
my ( @dirs, @files)= ( @{-d}, @{-f} ) for (readdir DIR);