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Answers and rating deltas for

In R, how do I extract minutes and seconds from characters

Author Votes Δ
DatamineR 2 +4.55
A5C1D2H2I1M1N2O1R2T1 0 -0.42
Nikos 0 -1.23
Last visited: Apr 28, 2015, 12:47:01 PM