Re: [BUG] ob-R.el: extra empty data.frame columns generated from plain lists after recent change [9.6 (release_9.6-3-ga4d38e @ /usr/share/emacs/30.0.50/lisp/org/)]

[Johan Tolö]

Greg Minshall <minshall@umich.edu> writes:
> > list(1,2,3)
> [[1]]
> [1] 1
>
> [[2]]
> [1] 2
>
> [[3]]
> [1] 3
>
> > c(1,2,3)
> [1] 1 2 3
> ----
> (where =c= is the "concatenation operator".)
>
> so, to me, at least, "proper list" is not a well-defined term in 
> R.
>
> cheers, Greg

=c= is "a generic function which combines its arguments" according 
to the R documentation. It could do different things depending on 
the input.

=list()= will create an actual R list which are "Generic Vectors" 
according to the R documentation. Each element of a list can be 
any other R data structure including other lists, expressions and 
symbols.

"Proper list" in the context of this discussion and pertaining to 
R would be a =list()=, not a vector which is what is usually 
returned by =c()=. A =data.frame()= is a special case of a 
=list()= where every column has to have the same length.


Johan

--
Johan Tolö