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Answers and rating deltas for

Is there a nice way to do an operation on all pairings of the columns of two data frames?

Author Votes Δ
Prasad Chalasani 5 +1.89
Richie Cotton 3 +0.35
James 3 +0.57
Gavin Simpson 2 -2.10
Last visited: Sep 14, 2014, 5:07:29 AM