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Answers and rating deltas for

What should the return type be when the function might not have a value to return?

Author Votes Δ
milleniumbug 22 +4.26
Johann Gerell 5 +0.84
R. Martinho Fernandes 3 -0.57
TobiMcNamobi 1 -0.40
Chani 0 -1.89
BlackMamba -2 -3.48
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