[R] which is faster "for" or "apply"

[Karim Mezhoud]

Hi All,
I would like to choice between these two data frame convert. which is
faster?

   for(i in 1:ncol(DataFrame)){

                    DataFrame[,i] <- as.numeric(DataFrame[,i])
                }


OR

DataFrame <- as.data.frame(apply(DataFrame,2 ,function(x) as.numeric(x)))


Thanks
Karim
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