Said code (and then some): 
$\ = "\n";

print(my @a = reverse('hello'));  # hello (order or scalars reversed)
print(my $s = reverse('hello'));  # olleh (order of chars reversed)

print(reverse('hello'));          # hello (order or scalars reversed)
print(scalar(reverse('hello')));  # olleh (order of chars reversed)

sub f(@) { return @_; }
sub g($) { return @_; }

print(f(reverse('hello'));        # hello (order or scalars reversed)
print(g(reverse('hello')));       # olleh (order of chars reversed)

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In reply to Re^8: Binary to decimal conversion by ikegami
in thread Binary to decimal conversion by andreas1234567

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