r-cran-listenv - 0.9.0+dfsg-1 main

List environments are environments that have list-like properties. For
instance, the elements of a list environment are ordered and can be accessed
and iterated over using index subsetting, e.g. 'x <- listenv(a=1, b=2); for (i
in seq_along(x)) x[[i]] <- x[[i]]^2; y <- as.list(x)'.