There is a modifyList function in pkg utils that is used extensively in
the code for lattice graphics:
var$options <- modifyList(var$options, list( misc=list(abc = "123"),
mi= list(something = 13))
)
#---
> var
$options
?identical
?rapply might also be useful to get more granular diagnostics. (??)
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Wed, May 27, 2020 at 1:13 PM
Awesome thanks.
On Wed, May 27, 2020 at 1:31 PM William Dunlap wrote:
> all.equal()
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
>
> On Wed, May 27, 2020 at 1:13 PM John Harrold
> wrote:
>
>> Thankyou Bert and Bill.
>>
>> I have one last question. Is there a tool that will
all.equal()
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Wed, May 27, 2020 at 1:13 PM John Harrold
wrote:
> Thankyou Bert and Bill.
>
> I have one last question. Is there a tool that will recursively compare
> two lists to find differences in both their structure and contents?
>
> I'm
Thankyou Bert and Bill.
I have one last question. Is there a tool that will recursively compare two
lists to find differences in both their structure and contents?
I'm afraid that in the process of converting code from $ to [[]] formats I
may inadvertently introduce some errors. And I'd like to
Hmmm... yes. I read (past tense) that passage as meaning that **when
extracting** partial matching is only done with $. I did not read it as
also saying that with assignment, partial matching with $ is not done, but
I see how you could. As Bill D.'s example showed, even R seems confused
about how
Hello Bert,
I've read the documentation and I didn't think it applied here. Perhaps
it's my reading of that documentation I'm confused by. I stays *only when
extracting*. What I'm doing here is assigning values. Is the expected
behavior really to create a copy of the "misc" element in "mi" and
Another symptom of this problem is:
> {x <- list(Abc=list(Pqr="Old Abc$Pqr")); x$Ab$Pqr <- "New Ab$Pqr" ; x}
R version 3.6.2 (2019-12-12) | R version 4.0.0 (2020-04-24)
List of 2| List of 2
$ Abc:List of 1 | $ Abc:List of 1
..$ Pqr: chr "Old Abc$Pqr" | ..$
I can't answer your question (about your R programming skills) but the
behavior you complain about is as documented. In particular:
"Thus the default behaviour is to use partial matching only when extracting
from recursive objects (except environments) by $. Even in that case,
warnings can be
Hello,
I'm testing some code in R 4.0, and I'm having an issue with the following"
# -
rm(list=ls())
graphics.off()
#load("/tmp/post.RData")
var = list();
# If I uncomment this it fixes things:
# var$options = list(mi = list(),
#misc = list())
#
10 matches
Mail list logo
