I understand that everything passed to an R function is passed "by value". This would seem to include data frames, which my current application uses heavily, both for storing program inputs, and holding intermediate and final results. In trying to get greater performance out of my R code, I am wondering if there is any clean way to access data frames without having them copied all the time. Or is my only option to make them global, and write to them using <<- ?
I have considered using matrices, but I like the self-documenting aspect of data frame column names. Input/output to disk is not the issue here, as that does not take long in my case. It's just the internal parameter passing that I'm concerned about. (I've checked R-FAQ, R-lang and searched the R-help archives, but didn't see any specific mentions of this.) Thanks. Grant Schultz ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
