[R-pkg-devel] debian-clang error with class

[Christian Martin Hennig]

Great, thanks!

On 1/8/20 7:18 PM, Fernando Roa wrote:
Take a look at
https://stat.ethz.ch/pipermail/r-package-devel/2019q4/004675.html

Best,

On Wed, Jan 8, 2020 at 3:09 PM Christian Martin Hennig <christian.hennig using unibo.it<mailto:christian.hennig using unibo.it>> wrote:
Hi there,

I have an ERROR in my fpc package on debian-clang that I currently
cannot reproduce due to the fact that rhub is apparently affected by a
bug on that platform that doesn't allow me to install Bioconductor
packages. The description is "--- failure: the condition has length > 1
---". I have googled for this and have found that there are a lot of
packages that have such an error on debian-clang only. In all cases this
seems to be associated with lines that compare a class of some object
with a string such as

if (class(xxx)!="try-error"), if (class(m)=="matrix"), if (class(y) %in%
c("onething,"anotherthing")) etc.

(The fpc package apparently achieved this with a "try-error" check.)

Now on my machine (which isn't debian-clang) the class of xxx is a
harmless thing, either "try-error" or another simple string (in the
example that caused the error it is actually "matrix"), so it's not
clear to me what's wrong with this on debian-clang. However, looking at
all these other cases in other packages, I'm pretty sure that the error
comes from comparing class(something) with a string.

Can anybody shed some light on this? What goes wrong with
class(xxx)!="try-error" and the like on debian-clang that works elsewhere?

Thanks,

Christian


--
Christian Hennig
Dipartimento di Scienze Statistiche "Paolo Fortunati",
Universita di Bologna, phone +39 05120 98163
christian.hennig using unibo.it<mailto:christian.hennig using unibo.it>

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--
Fernando Roa

--
Christian Hennig
Dipartimento di Scienze Statistiche "Paolo Fortunati",
Universita di Bologna, phone +39 05120 98163
christian.hennig using unibo.it<mailto:christian.hennig using unibo.it>

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