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Answers and rating deltas for

Can any body please explain this line of code in operator overloading for the plus

Author Votes Δ
Sarmad Ali 1 +2.97
Galik 1 +0.23
Ekansh Gautam 0 -2.53
Rishav 0 -2.26
Last visited: Jun 20, 2018, 6:45:27 PM