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[R-pkg-devel] NOTE for a suggested package

4 messages · Mohammad Ali Nilforooshan, Jeff Newmiller, Joshua Ulrich +1 more

Original
Mohammad Ali Nilforooshan
# 
I'm struggling to stop receiving a NOTE about a suggested package, and it
seems to be the problem for many people. Your help is really appreciated.

In the function, I have:

if(requireNamespace("doParallel", quietly=TRUE))
{
   library("doParallel")
   cl = parallel::makeCluster(ncl)
   doParallel::registerDoParallel(cl)
   Q = foreach(i=ggID, .combine='cbind') %dopar% ## do something
} else {
   ## do something else
}

In DESCRIPTION, I have:

Suggests:
   doParallel (>= 1.0.14)

This is the NOTE that I receive:

'library' or 'require' call to 'doParallel' in package code.
Please use :: or requireNamespace() instead.
See section 'Suggested packages' in the 'Writing R Extensions' manual.
Jeff Newmiller
# 
Remove the library function call...
On February 23, 2019 3:43:15 PM PST, Mohammad Ali Nilforooshan <m.a.nilforooshan at gmail.com> wrote:

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Joshua Ulrich
    

    

      
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You can remove the `library("doParallel")`.  Your call to
requireNamespace() plus calling all doParallel functions with `::` is
sufficient.  That should resolve the NOTE.

On Sat, Feb 23, 2019 at 5:49 PM Mohammad Ali Nilforooshan

        
<m.a.nilforooshan at gmail.com> wrote:

            

      
      
      
    

        

      
      
    

        

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Uwe Ligges
    

    

      
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On 24.02.2019 00:43, Mohammad Ali Nilforooshan wrote:

            

      
      
      
    

        
Do you really need both, the namespace loaded *and* the package oin the 
search oath?

If the former is suficient, the library(call) should be omitted.

Best,
Uwe Ligges