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Answers and rating deltas for

Why do we use += when adding an event to a button?

Author Votes Δ
Nico 2 +1.34
Tim 0 -0.56
Daniel A. White 0 -0.63
nurkanat 0 -0.52
Win 0 -0.57
Last visited: Aug 26, 2016, 2:34:25 PM