Re: [R-pkg-devel] Example fails in check
Pipes are very functional, unlike data.table. However, their extensive use of
non-standard evaluation a la `subset` or `with` does complicate the package
check process.
As to the actual question, Imports announces that the magrittr package is a
private dependency for your package. Users would have to load that package if
they wanted to use it also. Since examples are run as if they were the user,
they are subject to that same constraint. The advantage of having Imports
rather than Depends is that you have more flexibility to change which
dependencies you use to achieve your goals as a package without affecting the
functions that the user has to be prepared to use our avoid, and the user is on
their own as to which packages they use.
On July 26, 2019 12:13:17 AM PDT, Uwe Ligges
wrote:
>I'd suggest not to use pipes in package code, as the parser does not
>know about them and hence debugging, error messages are more
>obfuscated.
>
>Why not use he functional way of R?
>
>
>For the question: I guess you do not have a corresponding entry in the
>NAMESPACE file?
>
>Best,
>Uwe
>
>
>
>On 26.07.2019 08:37, Sigbert Klinke wrote:
>> Hi,
>>
>> im my package development I get the following error when checking an
>> example:
>>
>> > m <- findMatch('test', x[[1]], FUN='leven(code)') %>%
>addWave(x[[2]])
>>
>> Error in findMatch("test", x[[1]], FUN = "leven(code)") %>%
>> addWave(x[[2]]) :
>> could not find function "%>%"
>> Execution halted
>>
>> In my DESCRIPTION file I wrote
>>
>> Imports:
>> rio,
>> stringi,
>> magrittr
>>
>> So, I expected that magrittr is loaded when the example is executed.
>>
>> If I add an "library(magrittr)" at the beginning of the example then
>the
>> example is okay.
>>
>> Any ideas what goes wrong?
>>
>> Sigbert
>>
>
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Re: [R-pkg-devel] Example fails in check
On 26/07/2019 2:37 a.m., Sigbert Klinke wrote:
Hi,
im my package development I get the following error when checking an
example:
> m <- findMatch('test', x[[1]], FUN='leven(code)') %>% addWave(x[[2]])
Error in findMatch("test", x[[1]], FUN = "leven(code)") %>%
addWave(x[[2]]) :
could not find function "%>%"
Execution halted
In my DESCRIPTION file I wrote
Imports:
rio,
stringi,
magrittr
So, I expected that magrittr is loaded when the example is executed.
Loaded doesn't mean it is on the search list. To get that you need
library(magrittr), or require(magrittr).
Examples can't see things that are internal to the package. Importing a
package only makes it available internally. If you want it visible
externally (as it needs to be in an example), you need to export it.
So if you want users of your package to have access to magrittr pipes,
you should put something like this in your NAMESPACE file, as well as
the declaration in your DESCRIPTION file:
importFrom(magrittr, "%>%")
export("%>%")
Duncan Murdoch
If I add an "library(magrittr)" at the beginning of the example then the
example is okay.
Any ideas what goes wrong?
Sigbert
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Re: [R-pkg-devel] Example fails in check
I'd suggest not to use pipes in package code, as the parser does not
know about them and hence debugging, error messages are more
obfuscated.
Why not use he functional way of R?
For the question: I guess you do not have a corresponding entry in the
NAMESPACE file?
Best,
Uwe
On 26.07.2019 08:37, Sigbert Klinke wrote:
Hi,
im my package development I get the following error when checking an
example:
> m <- findMatch('test', x[[1]], FUN='leven(code)') %>% addWave(x[[2]])
Error in findMatch("test", x[[1]], FUN = "leven(code)") %>%
addWave(x[[2]]) :
could not find function "%>%"
Execution halted
In my DESCRIPTION file I wrote
Imports:
rio,
stringi,
magrittr
So, I expected that magrittr is loaded when the example is executed.
If I add an "library(magrittr)" at the beginning of the example then the
example is okay.
Any ideas what goes wrong?
Sigbert
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