A shorter reproducible example:
example(makeActiveBinding)
for (fred in 1:3) { 0 }
ls()
Both problems go away if you first do
compiler::enableJIT(2)
So looks like a bug in compiling the for loop.
-Deepayan
On Sat, May 23, 2020 at 5:45 PM Thomas Friedrichsmeier via R-devel
wrote:
>
>
Possibly just a symptom of the earlier behavior, but I'll amend my
example, below, with an even more disturbing observation:
Am Sat, 23 May 2020 13:19:24 +0200
schrieb Thomas Friedrichsmeier via R-devel :
[...]
> Consider the code below:
>
> makeActiveBinding("i",
> function(value) {
>
Hi,
I stumbled upon a surprising behavior when using an active binding as a
loop index variable in R 4.0.0. In contrast, the behavior observed in R
3.6.1 is in line with my expectations.
Consider the code below:
makeActiveBinding("i",
function(value) {
if
