[Rd] Depot for S3 to S4 generics (as in stats4)?
Sven E. Templer
sven.templer at gmail.com
Sun Jul 6 12:23:27 CEST 2014
the implementation of S4 generics for existing S3 ones in the base
package is concerned to be a threat to quick startup times . But
since S4 is promoted, and S3/S4 interoperability a pain when package
developing , are there efforts to improve the situation? E.g. an S3
free system, etc.
A good thing  is the package 'stats4', including some setGeneric
calls (e.g. for summary, plot, ...) which I can 'importFrom' to a
NAMESPACE. Nevertheless, functions as as.matrix, as. dist, merge,
duplicated, and for sure some others, are not available as S4
So my question is: will the base/graphics/... S3 generic definitions
for S4 methods be completely implemented in a future R release?
(E.g. in base4/stats4,/graphics4/... (by heritage ) or combined by
a single package such as genericS4)
Sorry I couldn't get more information from the devel archive (or find
a solution/answer) since the same idea already has been mentioned in
2007 . Thank you for clarifying in advance.
 my opinion
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