Right, up till now, I haven't had to do anything but the simplest forms of Memoization, so my example would generally work for me. I find myself doing memoization most often when I'm doing database queries that I expect should return the same things for the duration of the process, i.e. if handling a Web request. Obviously the situation would be different if one were running a persistent process.

perl -e 'split//,q{john hurl, pest caretaker}and(map{print @_[$_]}(joi
+n(q{},map{sprintf(qq{%010u},$_)}(2**2*307*4993,5*101*641*5261,7*59*79
+*36997,13*17*71*45131,3**2*67*89*167*181))=~/\d{2}/g));'
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