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Answers and rating deltas for

What is the purpose of a question mark after a type (for example: int? myVariable)?

Author Votes Δ
Sean 119 +1.11
Klaus Byskov Pedersen 22 +0.11
Ahmet Kakıcı 13 +0.13
eKek0 10 -0.63
Thanos Papathanasiou 6 -3.94
Last visited: Sep 14, 2014, 5:07:29 AM