FAQ 4.47 How do I handle circular lists?

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4.47: How do I handle circular lists?

Circular lists could be handled in the traditional fashion with linked
lists, or you could just do something like this with an array:

unshift(@array, pop(@array)); # the last shall be first
push(@array, shift(@array)); # and vice versa

You can also use "Tie::Cycle":

use Tie::Cycle;

tie my $cycle, 'Tie::Cycle', [ qw( FFFFFF 000000 FFFF00 ) ];

print $cycle; # FFFFFF
print $cycle; # 000000
print $cycle; # FFFF00



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