On Dec 30, 2010, at 7:50 AM, Matteo Bertini wrote: > I'm testing some modifications in arima.c. > I've noticed that a big internal array of double (rbar) is usually sparse and > I'd like to add an option to store it as key-value mapping. > > Is there a library function or some other approach already used inside the R > core for key-value mappings? >
environment created with hash=TRUE, e.g.: e = new.env(TRUE, emptyenv()) e[["foo"]] = "bar" You can even set "size" with the expected size if you know it in advance. Cheers, Simon ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
