[Rd] iterated lapply

Eduardo Arino de la Rubia earino at gmail.com
Mon Feb 23 22:53:00 CET 2015


Greetings!

I thought it was a lazy evaluation thing. I added "force" around
mycondition and everything worked as expected.

Cheers!

On Mon Feb 23 2015 at 1:47:20 PM Jeroen Ooms <jeroenooms at gmail.com> wrote:

> On Mon, Feb 23, 2015 at 12:57 PM, Daniel Kaschek
> <daniel.kaschek at physik.uni-freiburg.de> wrote:
> > Is this a bug or a feature?
>
> I think it is a bug. If we use substitute to inspect the promise, it
> appears the index number is always equal to its last value:
>
> vec <- c("foo", "bar", "baz")
> test <- lapply(vec, function(x){
>   function(){x}
> })
> substitute(x, environment(test[[1]]))
> substitute(x, environment(test[[2]]))
>
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