[R] 'closure' (was "stats:: spline's method could not be monoH.FC")

[Richard O'Keefe]

I should clarify that the original *problem* wasn't a case of environment()<-
but a proposed solution was.  As the proposer wrote,
"However, this can lead to headaches downstream".

We agree that it is very important and useful to understand environments in R.
I once set out to construct a formal model of environments in S and R and how
lookup works.  I lost track of all the functions I had to consider and gave up.

On Thu, 7 May 2020 at 16:50, Mark Leeds <markleeds2 using gmail.com> wrote:
>
> Richard: I may have implied that one should "mess with environments" by saying that I agree with Abby. If so, my apologies because that's not what I meant.
> I only meant understanding.
>
>
>
> On Thu, May 7, 2020 at 12:47 AM Mark Leeds <markleeds2 using gmail.com> wrote:
>>
>> Hi Richard: I didn't say it was and didn't mean to imply it.  All I said is that it was an example of where "not understanding environments"  can lead
>> to errors that won't be understood by the person experiencing them. It just so happens that the use of  "environment(f) <- " can lead to a solution but there
>> are other solutions and it was not my intention to talk about the various solutions. Only that it can be helpful if one understands the notion of environments in R.
>>
>>
>>
>>
>>
>>
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>> On Thu, May 7, 2020 at 12:42 AM Richard O'Keefe <raoknz using gmail.com> wrote:
>>>
>>> That example is NOT an example of "messing around with environments."
>>>
>>> On Thu, 7 May 2020 at 15:36, Mark Leeds <markleeds2 using gmail.com> wrote:
>>> >
>>> > Hi Abby: I agree with you because below is a perfect example of where not understanding environments causes a somewhat
>>> > mysterious problem. Chuck Berry explains it in a follow up  email.
>>> >
>>> > https://r.789695.n4.nabble.com/issues-with-environment-handling-in-model-frame-td4762855.html
>>> >
>>> >
>>> > On Wed, May 6, 2020 at 11:28 PM Abby Spurdle <spurdle.a using gmail.com> wrote:
>>> >>
>>> >> > If you want to mess around with the environment of a
>>> >> > function, then you need to understand this stuff, but you probably
>>> >> > shouldn't do that.
>>> >>
>>> >> What exactly do you mean?
>>> >>
>>> >> Are you implying that a user should not use environments?
>>> >> In which case, I would disagree.
>>> >>
>>> >> ______________________________________________
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