[R] Partial matching list elements in R 4.0

[John Harrold]

Awesome thanks.

On Wed, May 27, 2020 at 1:31 PM William Dunlap <wdunlap using tibco.com> wrote:

> all.equal()
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
>
> On Wed, May 27, 2020 at 1:13 PM John Harrold <john.m.harrold using gmail.com>
> 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 afraid that in the process of converting code from $ to [[]] formats
>> I may inadvertently introduce some errors. And I'd like to QC it in some
>> way.
>>
>> Thanks
>> John
>>
>> On Tue, May 26, 2020 at 11:33 AM William Dunlap <wdunlap using tibco.com>
>> wrote:
>>
>>> 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$Pqr" |   ..$ Pqr: chr "New Ab$Pqr"
>>>  $ Ab :List of 1             |  $ Ab :List of 1
>>>   ..$ Pqr: chr "New Ab$Pqr"  |   ..$ Pqr: chr "New Ab$Pqr"
>>>
>>> Bill Dunlap
>>> TIBCO Software
>>> wdunlap tibco.com
>>>
>>>
>>> On Tue, May 26, 2020 at 10:45 AM John Harrold <john.m.harrold using gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>>
>>>>
>>>> I'm testing some code in R 4.0, and I'm having an issue with the
>>>> following"
>>>>
>>>> # -------------
>>>> rm(list=ls())
>>>> graphics.off()
>>>> #load("/tmp/post.RData")
>>>> var = list();
>>>> # If I uncomment this it fixes things:
>>>> # var$options = list(mi   = list(),
>>>> #                    misc = list())
>>>> #
>>>> var$options$misc$abc = "123"
>>>> var$options$mi$something    = 13
>>>> #------------
>>>>
>>>> This is a stripped down example but it exhibits the issue I"m having.
>>>> Basically when I create the list element var$options$mi the contents of
>>>> var$options$misc move over to var$options$mi. And what was in
>>>> var$options$misc become NULL:
>>>>
>>>> So now var$options looks like:
>>>>
>>>> var$options
>>>> $misc
>>>> $misc$abc
>>>> NULL
>>>>
>>>> $mi
>>>> $mi$abc
>>>> [1] "123"
>>>> $mi$something
>>>> [1] 13
>>>>
>>>> This worked (still works) in R 3.5.1. I understand partial matching,
>>>> but is
>>>> this normal lists moving over to elements like this? I can uncomment the
>>>> text mentioned in the example and it seems to fix it, but I'm wondering
>>>> if
>>>> this is a bug or just my poor programming coming back to bite me.
>>>>
>>>> I've included my sessionInfo() at the bottom.
>>>>
>>>> Thanks
>>>> John
>>>> :wq
>>>>
>>>>
>>>> sessionInfo()
>>>>
>>>> R version 4.0.0 (2020-04-24)
>>>>
>>>> Platform: x86_64-apple-darwin17.0 (64-bit)
>>>>
>>>> Running under: macOS Mojave 10.14.5
>>>>
>>>>
>>>> Matrix products: default
>>>>
>>>> BLAS:
>>>>
>>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRblas.dylib
>>>>
>>>> LAPACK:
>>>>
>>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
>>>>
>>>>
>>>> locale:
>>>>
>>>> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>>>>
>>>>
>>>> attached base packages:
>>>>
>>>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>>>
>>>>
>>>> other attached packages:
>>>>
>>>> [1] gdata_2.18.0  ggplot2_3.3.0 deSolve_1.28
>>>>
>>>>
>>>> loaded via a namespace (and not attached):
>>>>
>>>>  [1] Rcpp_1.0.4.6     gtools_3.8.2     withr_2.2.0      assertthat_0.2.1
>>>>
>>>>  [5] dplyr_0.8.5      digest_0.6.25    crayon_1.3.4     grid_4.0.0
>>>>
>>>>  [9] R6_2.4.1         lifecycle_0.2.0  gtable_0.3.0     magrittr_1.5
>>>>
>>>> [13] scales_1.1.1     pillar_1.4.4     rlang_0.4.6      vctrs_0.3.0
>>>>
>>>> [17] ellipsis_0.3.1   glue_1.4.1       purrr_0.3.4      munsell_0.5.0
>>>>
>>>> [21] compiler_4.0.0   pkgconfig_2.0.3  colorspace_1.4-1 tidyselect_1.1.0
>>>>
>>>> [25] tibble_3.0.1
>>>>
>>>>         [[alternative HTML version deleted]]
>>>>
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>>>>
>>>
>>
>> --
>> John
>> :wq
>>
>

-- 
John
:wq

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