Hi,
The code below creates a value, x$a, which depending on how you access it
evaluates to its initial value, or to what it's been changed to. The last
two lines should, I would have thought, evaluate to the same value, but they
don't.
f <- function () {
x <- NULL;
x$a <- 0;
x$get.a <- function () {
x$a;
};
x$increment.a <- function () {
x$a <<- x$a + 5;
};
x
};
x <- f();
x$increment.a();
x$get.a();
x$a;
This can be repeated; each time you call x$increment.a(), the value
displayed by x$get.a() changes, but x$a continues to be zero.
Is that totally weird, or what?
Thanks,
Jeff
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