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2012 Feb 26
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Comments on R_exts section 1.6.6, Namespaces with S4 classes and methods
> R.version.string
[1] "R Under development (unstable) (2012-02-26 r58493)"
In the recent addition "It is important if you export S4 methods that
the corresponding generics are available: the requirementa on this are
stricter as from R 2.15.0. You may for example need to import plot from
graphics to make visible a function to be converted into its implicit
generic. But it is better practice to make use of the generics exported
by stats4 as this enables multiple packages to unambiguously set meth...