Thanks, but my use of print here is really a toy example, not necessarily the end-goal. This strategy would fail if I were to attempt load a data set from some_package or use any functions from some_package.
A more specific example of what I'm dealing with is here: http://www.repidemicsconsortium.org/incidence/reference/get_counts.html#examples. This is what the user would see if they were to use example(get_counts). On Fri, Aug 10, 2018 at 12:14 PM Alexandre Courtiol < alexandre.court...@gmail.com> wrote: > Perhaps then something like: > Print <- function(x) if (requireNamespace("some.package", quietly = TRUE)) > print(x) > Print("Hi") > Print("Hello") > Print("Goodbye") > > > > On Fri, 10 Aug 2018 at 12:33, Zhian Kamvar <zkam...@gmail.com> wrote: > >> Mainly, I would like to see the value printed after the print statement >> like it would appear in a normal R session: >> >> print("Hi") >> #> [1] "Hi" >> print("Hello") >> #> [1] "Hello" >> print("Goodbye") >> #> [1] "Goodbye" >> >> >> On Fri, Aug 10, 2018 at 11:28 AM Alexandre Courtiol < >> alexandre.court...@gmail.com> wrote: >> >>> Hi Zhian, >>> Could you please explain what behaviour you would like to obtain? >>> I really don't understand what your problem is from your description... >>> Alex >>> >>> On Fri, 10 Aug 2018 at 12:18, Zhian Kamvar <zkam...@gmail.com> wrote: >>> >>>> Hello, >>>> >>>> I know it's good practice to use >>>> >>>> if (require("some_package")) { >>>> # some code that needs some_package >>>> } >>>> >>>> In R examples that needs a package listed in Suggests. >>>> >>>> The problem with this approach is that if there are any print statements >>>> within this structure, then they only get printed after the braces and >>>> not >>>> after the lines like so: >>>> >>>> if (TRUE) { >>>> print("Hi") >>>> print("Hello") >>>> print("Goodbye") >>>> } >>>> #> [1] "Hi" >>>> #> [1] "Hello" >>>> #> [1] "Goodbye" >>>> >>>> The only way I can think of circumventing this is by replacing the if >>>> statement with a stopifnot statement: >>>> >>>> stopifnot(require("some_package")) >>>> # some code that needs some_package >>>> >>>> But, I'm not sure if that's okay to do in a function example. Does >>>> anyone >>>> have any ideas or suggestions on how to help with this kind of thing? >>>> >>>> Cheers, >>>> Zhian >>>> >>>> [[alternative HTML version deleted]] >>>> >>>> ______________________________________________ >>>> R-package-devel@r-project.org mailing list >>>> https://stat.ethz.ch/mailman/listinfo/r-package-devel >>>> >>> >>> >>> -- >>> Alexandre Courtiol >>> >>> http://sites.google.com/site/alexandrecourtiol/home >>> >>> *"Science is the belief in the ignorance of experts"*, R. Feynman >>> >> > > -- > Alexandre Courtiol > > http://sites.google.com/site/alexandrecourtiol/home > > *"Science is the belief in the ignorance of experts"*, R. Feynman > [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
