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in reply to Dreaming in Perl

I came up with some code in a dream that solved a problem once. I saw a little mental movie of an array being iterated through two by two, not one by one, and it looked like this
foo,bar,baz,quux |___| foo,bar,baz,quux |___|
and it turned out to be not a bad solution to the problem.
--
($_='jjjuuusssttt annootthheer pppeeerrrlll haaaccckkeer')=~y/a-z//s;print;