Greetings,
I am trying to understand how to making a subset assignment function.
Take the example where of making a "last" generic function.
last <- function(x,...) UseMethod("last");
last.numeric <- function(x, ...) x[length(x)]
last.list <- function(x, ...) x[[length(x)]]
.....
Now we run into the problem at hand if we want to assign something to the
last item. Of course we could define a separate setter function, but I am
not interested in this problem specifically, but understanding the method
that would let me write the function to allow the following reasonable
behavior.
vec <- 1:5
last(vec)<-10
vec $ 10
Thank you for your time and expertise!
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