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Dear all, Playing with a toy problem, I wondered how much it costs to generate `internal' objects in a function that are not strictly needed. An example: mean(apply(t(matrix(as.vector(x) - x0 / h, , nrow=nrow(x), ncol=ncol(x))), c(2) epakern, dim)) / h^dim It would be more _readable_ if I defined the object inside the apply(), stick it there and rm() after, but my feeling is that creating it and than removing is costlier. (If the above structure is too simple, imagine something more complicated) Am I right, it does not matter, since i...