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Answers and rating deltas for

How can I check that a list has one and only one truthy value?

Author Votes Δ
Jon Clements 107 +1.24
David Robinson 27 +0.51
moooeeeep 21 +0.81
Andrew Clark 15 +0.05
Antti Haapala -- Слава Україні 5 0.00
gariel 5 +1.65
Martin Konecny 2 -0.62
karthikr 2 -0.69
Marc Laugharn 2 -0.65
Nisan.H 2 -0.92
martineau 2 -0.16
Joran Beasley 2 -0.25
Marcin 1 -0.89
c-urchin 0 -3.11
Last visited: Sep 14, 2014, 5:07:29 AM