On 06.11.2015 00:52, Boylan, Ross wrote:
I am trying to update a package from 2010 to the new standards, including
adding a NAMESPACE file. The package has S4 classes, and I'm having some
trouble interpreting the manual.
Suppose I have
setClass("MyClass", .....)
MyClass <- function(a, b, c) {...} # constructor
and various methods for the class
Assuming I want to make the class and everything associated user-visible, I must
exportClass(MyClass)
Do I need to
export(MyClass)
so the constructor is visible?
Yes, if a user shoudl have access to the constructor.
Do I need to
exportMethods()
for the methods of that class?
Yes, if not only used internally by your own functions.
I take it that if the class uses a name from elsewhere in the system, e.g., it has a
"print" method, I must import that too. Or is it that I only need to import
generics that are not in the base package?
Right, you need to import the generics you want to use.
Best,
Uwe Ligges
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