This is a useful observation. To talk about it, though, we need to re-express
it in terms that make sense for R; there are too many misconceptions otherwise.
The basic observation is this: When simple subset or element replacement is
done in a loop, normally the object is only copied on the fi
Dear all
I am trying to find the best way to handle large fields in reference
classes.
As the code below shows assignment via <<- causes many copies to be made if
the subsetting is extensive (in modb1). This can cause R to run out of
memory. Creating a local copy and using the optimisation in <-
