One of my functions does parallel processing with "doParallel" and
"foreach". "foreach" is a dependency to "doParallel". My R package keeps
failing, because %dopar% is not recognized as a function. I tried
%foreach::dopar%, %parallel::dopar% , %doParallel::dopar%, and
%iterators::dopar%. It didn't help!
In DESCRIPTION, I have:
Suggests:
dpParallel (>= 1.0.14)
I want it to be "suggested" rather than a dependency.
Following is the example function. To make sure that it is working, try
library("doParallel").
myfunc = function(n) {
if(requireNamespace("doParallel", quietly=TRUE))
{
cl = parallel::makeCluster(2)
doParallel::registerDoParallel(cl)
Q = foreach::foreach(i=1:n, .combine='cbind') %dopar% rep(i, 5)
parallel::stopCluster(cl)
return(Q)
} else {
print("Package doParallel is required.")
}
}
Your help is really appreciated!
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