[Rd] nrow(rbind(character(), character())) returns 2 (as documented but very unintuitive, IMHO)
@purd|e@@ @end|ng |rom gm@||@com
Fri May 17 07:09:09 CEST 2019
Herve Pages wrote:
> In my experience, and more generally speaking, the desire to treat
> 0-length vectors as a special case that deviates from the
> non-zero-length case has never been productive.
Gabriel Becker Wrote:
> > nrow(rbind(aa = c("a", "b", "c"), AA = character()))
>  1
> By rights of the invariance that you and Hadley are advocating, as far as
> I understand it, the last should give 2 rows, one of which is all NAs,
> rather than giving only one row as it currently does (and, I assume?,
> always has).
I think, ideally, this example should generate an error or a warning.
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