Dear List,
I'm currently investigating if the argument dispatch mechanism based on
`...` could somehow be "generalized" to scenarios that involve `r`
recipients located across `c` calling stack layers *and* combined with the
S4 method mechanism (for those interested see
http://stackoverflow.com/questions/26963900/generalizing-three-dots-argument-dispatch-s4-methods-for-argument-set-i
for an (conceptual) approach of how this could be realized).
AFAICT, this would require that `...` can be *mixed* with other signature
arguments, which is currently not supported as stated in `?dotsMethods`:
Quote {
Using "..." in a Signature
Beginning with version 2.8.0 of R, S4 methods can be dispatched (selected
and called) corresponding to the special argument “...”. Currently, “...”
cannot be mixed with other formal arguments: either the signature of the
generic function is “...” only, or it does not contain “...”. (This
restriction may be lifted in a future version.)
}
Would it be possible to consider lifting this limitation soon?
Thanks a lot to everyone maintaining R!!
Janko
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