A way to efficiently store ids (i.e., possibly sequential numbers > 0), well suited for params-ecoding.
Note that the ids will be sorted and uniqued.
> require 'id_stuffer' => true > l = IdStuffer.stuff [1,2,3,4,5,6,7,10,11,12,15,16,17] => "IdS1ulxye8j3x" > IdStuffer.unstuff(l) => [1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 15, 16, 17]
It’s efficiency depends on the ocurrence of ‘runs’:
> IdStuffer.stuff [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] => "IdS1eh" > IdStuffer.stuff [1,2,3,4,5,6,7,10,11,12,15,16,17] => "IdS1ulxye8j3x" > IdStuffer.stuff [1,4,7,10,13,16,19,22,25,26,29,31,35] => "IdS14iltvlqc3t1ifhh1o8wnmf"
It’s pretty simple, but you can find more infos in our blog.
Copyright © 2010-2011 Peter Horn, Provideal GmbH
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