[R] R CMD check and foreach code

[Jannis]

On 27.03.2014 15:58, Duncan Murdoch wrote:
> I would use a slightly less dirty hack:  call globalVariables() to 
> declare that i is global.
>
> The foreach() function is using nonstandard evaluation to make this 
> work, and codetools (that does the checks) doesn't know all the ins 
> and outs of it.  (foreach is in a contributed package, not base R.) 
> The globalVariables() function is a way to tell codetools that even 
> though it looks wrong, the variable is really being used safely.
>
> Duncan Murdoch
>

Thanks, Duncan, for your reply. So how would I use this now? Reading the 
documentation still leaves me puzzled .... Just adding 
globalVariables('i') to the dummy function like this:

dummy =  function() {

   globalVariables('i')

   dummyfun =  function(iter) {
     iter * 2
   }
   registerDoMC(4)
   results = foreach(i = 1:10) %dopar% dummyfun(iter = i)
}


does not solve the problem.


Cheers
Jannis