The question was so poorly phrased that I was reluctant to reply, and IMHO toolic willently ignored it and chose the second best approach, the "anal tactic" of a "stubborn" reply... ;-)

We can only speculate about the use case, but IIRC it's possible to define readonly lists with the constant pragma and use them with indices like arrays.

UPDATE:

use constant WEEKDAYS => qw(
 Sunday Monday Tuesday Wednesday Thursday Friday Saturday
);
 
 print "Today is ", (WEEKDAYS)[ (localtime)[WDAY] ], ".\n";
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and it's also possible to use read-only values for arrays.