For posterity, the solution I employed did not register the method as
a formal S3 method. Functionality in package B was unchanged as long
as package B was loaded and attached... which was good enough for my
purposes.
On Wed, Dec 6, 2017 at 6:45 AM, Joshua Ulrich wrote:
> I have a feeling I know
We use this technique in a couple of places:
https://github.com/tidyverse/dbplyr/blob/6be777d8b23d588f19c98de52f4e58f16c2ef67e/R/zzz.R
Basic idea is to call registerS3method() manually, when needed - it's
just a little tricky because the suggested package may be loaded
either before or after your
On Thu, Dec 7, 2017 at 2:44 AM, Bill Denney wrote:
>
>> On Dec 6, 2017, at 07:45, Joshua Ulrich wrote:
>>
>> To avoid excessive dependencies, I would like to only register
>> foo.bar() if package A is installed at the time package B is
>> installed. If package A is installed after package B, the
Bill, Duncan,
Thanks for the replies.
On Wed, Dec 6, 2017 at 12:51 PM, Duncan Murdoch
wrote:
> On 06/12/2017 8:44 AM, Bill Denney wrote:
>>
>>
>>> On Dec 6, 2017, at 07:45, Joshua Ulrich wrote:
>>>
>>> To avoid excessive dependencies, I would like to only register
>>> foo.bar() if package A is
On 06/12/2017 8:44 AM, Bill Denney wrote:
On Dec 6, 2017, at 07:45, Joshua Ulrich wrote:
To avoid excessive dependencies, I would like to only register
foo.bar() if package A is installed at the time package B is
installed. If package A is installed after package B, then warn the
user when p
> On Dec 6, 2017, at 07:45, Joshua Ulrich wrote:
>
> To avoid excessive dependencies, I would like to only register
> foo.bar() if package A is installed at the time package B is
> installed. If package A is installed after package B, then warn the
> user when package B is loaded and/or attache
I have a feeling I know the answer to this question, but I'm asking
with the hope that I learn something new.
Package A defines a S3 generic function, "foo()". Package B defines a
S3 class "bar", and a foo.bar() method. This method is not strictly
necessary for the package to function, and packa
