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Answers and rating deltas for

Can an expression such as ([0-9]{2}|[0-9]{4}) be simplified?

Author Votes Δ
stema 4 +1.62
John Dvorak 3 +1.26
Amadan 1 -1.65
Anirudha 1 -0.89
Last visited: Sep 14, 2014, 5:07:29 AM