[diverted from R-help to R-devel]
>>>>> "Gabor" == Gabor Grothendieck <[EMAIL PROTECTED]>
>>>>> on Sun, 27 Nov 2005 14:16:34 -0500 writes:
<................>
Gabor> making use of as.data.frame.table we can shorten that
Gabor> slightly to just:
Gabor> as.data.frame.table(table(Species = iris$Species),
Gabor> responseName = "Count")
Gabor> Incidently, I just noticed that there is an
Gabor> inconsistency between as.data.frame and
Gabor> as.data.frame.table making it impossible to shorten
Gabor> as.data.frame.table to as.data.frame in the above due
Gabor> to the responseName= argument which is not referenced
Gabor> in the generic.
>> args(as.data.frame)
Gabor> function (x, row.names = NULL, optional = FALSE)
Gabor> NULL
>> args(as.data.frame.table)
Gabor> function (x, row.names = NULL, optional = FALSE, Gabor> responseName
= "Freq")
Gabor> NULL
{If you used str() instead of args() , you wouldn't get the
superfluous extra 'NULL' line }
I think this is an example where we (R-core) haven't followed
our own recommendations, namely, that generic functions (and
methods) need to have a (trailing) "..." argument
just so that new methods can have further arguments.
I'm wondering a bit...
or could there be a good reason in the present case,
why this hasn't been done?
Martin
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