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Answers and rating deltas for

How do I optimize sapply in R to calculate running totals on a dataframe

Author Votes Δ
cdeterman 4 +1.86
G. Grothendieck 3 +0.27
Martin Morgan 0 -1.56
TARehman 0 -1.93
Last visited: Jan 2, 2016, 6:43:56 AM