Running R CMD check on a package of mine throws a note regarding undefined global functions or variables. Consider the following example:
mypackage: no visible binding for global variable 'a'
mypackage: no visible global function definition for '.'
mypackage: no visible binding for global variable 'b'
Undefined global functions or variables:
. a b
a and b are iterators in foreach loops:
x <- foreach::foreach(a = A) %dopar% {some code}
y <- foreach::foreach(b = B) %do% {some code}
The dot is used in stats::update:
formula <- stats::update(formula, ~ . - 1)
This all works perfectly fine, and it is R CMD check that requires fixing, not the package. However, the repository maintainer refuses to accept the package unless I overcome this note. He recommended checking utils::globalVariables and I read the function's documentation and various discussions of it. What is not clear to me is whether utils::globalVariables(c("a", ".", "b")) would somehow interfere with the rest of my package? Would it affect the behavior or outcomes of the foreach loops or stats::update?
