> I don't see the benefit of seq_along(mtcars, 1) versus seq_len(nrow(df)) in > readability.
I like it because: * it reads nicely: I want a sequence along this structure in that direction * it's more consistent: for(i in seq_along(x)) -> for(row in seq_along(mtcars, 1)) * it generalised in a straightforward way to arrays I don't think it's a huge improvement, but it is frustrating when base functionality only works with vectors, not matrices, or arrays. It would be more compelling if (e.g.) t and rev also had dimension arguments. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
