Note: all.equal() with all its S3 methods is implemented entirely in R
code, so it should not be hard to find out where things happen
and how.
John Harrold
on Wed, 27 May 2020 21:52:16 -0700 writes:
> Is there a way to compare t1 and t2 above such that the
> name is used instead of the index?
I think that may be a reasonable feature request.
If you sit down look at the R codes and muse a bit, you may even get to
propose
a new optional argument to the all.equal.list() method.
Note the relevant R code is all in <R>/src/library/base/R/all.equal.R
development version (true source!) at
https://svn.r-project.org/R/trunk/src/library/base/R/all.equal.R
--> would be a topic for R-devel (rather than R-help) though.
Best,
Martin
> On Wed, May 27, 2020 at 9:14 PM Bert Gunter
> <bgunter.4567 at gmail.com> wrote:
>> Nope. You misread I think. It says that use.names = TRUE
>> causes mismatches to be **reported** by name rather than
>> index, not that it is recursing by name. It still
>> recurses by component indices.
>>
>> However, I still think that is wrong. It is not reporting
>> mismatches **by** name -- it is reporting mismatches
>> **in** names as well as in value.
>>
>>
>> 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 8:23 PM John Harrold
>> <john.m.harrold at gmail.com> wrote:
>>
>>> Howdy Folks,
>>>
>>> I believe I'm having trouble understanding the
>>> documentation for all.equal. If I have two lists like
>>> this:
>>>
>>> t1 = list(a = c(1,2,3), b = c("1", "2", "3")) t2 = list(
>>> b = c("1", "2", "3"), a = c(1,2,3))
>>>
>>> If I read the documentation correctly, by setting
>>> use.names equal to TRUE I believe this comparison should
>>> evaluate as true:
>>>
>>> all.equal(t1,t2, use.names=TRUE)
>>>
>>> However, I get the following output:
>>>
>>> which appears as though it is performing the comparison
>>> based on walking through indices and comparing that way.
>>>
>>> [1] "Names: 2 string mismatches" [2] "Component 1:
>>> Modes: numeric, character" [3] "Component 1: target is
>>> numeric, current is character" [4] "Component 2: Modes:
>>> character, numeric" [5] "Component 2: target is
>>> character, current is numeric"
>>>
>>> Can someone tell me what I'm doing wrong here?
>>> --
>>> John :wq
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________