Writing an R-package I use name spaces to use functions from existing packages, e.g.
No you don't need to reference base packages like this. You only need to reference non-base packages to ensure they are loaded into the function environment when functions from your package are run, either by using
@import in the Roxegen notes at the top of your script. See why you don't need to reference base packages below:
"The distinction between the binding environment and the enclosing environment is important for package namespaces. Package namespaces keep packages independent. For example, if package A uses the base mean() function, what happens if package B creates its own mean() function? Namespaces ensure that package A continues to use the base mean() function, and that package A is not affected by package B (unless explicitly asked for)."(Hadley Wickham)
The only time you need to reference base:: is if the namespace for your package contains a package that has an alternative function of the same name.