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Answers and rating deltas for

How do I figure out if I have already added an array of strings to my array of arrays?

Author Votes Δ
Sagar Pandya 1 +1.84
Eric Duminil 1 +1.29
tadman 0 -1.70
Aleksei Matiushkin 0 -1.43
Last visited: Jun 24, 2017, 4:03:14 PM