Or Tie::FlipFlop: 
use Tie::FlipFlop;
tie my $flipflop => 'Tie::FlipFlop', qw /black white/;
print $flipflop;  # black
print $flipflop;  # white
print $flipflop;  # black
print $flipflop;  # white

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Abigail

In reply to Re: Anyone use "xor" in conditionals? by Abigail-II
in thread Anyone use "xor" in conditionals? by bsb

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