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Answers and rating deltas for

Cannot understand the following Perl syntax

Author Votes Δ
amon 3 +1.31
David W. 1 +0.64
Quentin 0 -1.00
K Tatyana 0 -0.35
contravaluebets 0 -0.30
reinierpost -2 -0.87
Last visited: Sep 14, 2014, 5:07:29 AM