> A downside of that approach is that lapply(X,...) can > cause a lot of unneeded memory to be allocated (length(X) > SEXP's). Those SEXP's would be tossed out by simplify() but > the peak memory usage would remain high. sapply() can > be written to avoid the intermediate list structure.
But the upside is reusable code that can be used in multiple places - what about the simplification code used by mapply and tapply? Why are there three different implementations of simplification? 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
