On Oct 1, 2007, at 10:28 PM, [EMAIL PROTECTED] wrote:
> ?pairlist gives no explanation about what exactly is the difference
> between a pairlist and a list (except that a pairlist of length 0
> is 'NULL'). So, what's a pairlist?
>
I read "traditional _dotted pair_ lists (as in LISP)" there -
?list has a little bit of information. As far as I know, historically,
the more inefficient one (pairlist()) came first, where R inherits its
structure and implementation from LISP ; list() came later as a new
implementation of a list-like object which is more efficient and faster
in various manne
Hi,
?pairlist gives no explanation about what exactly is the difference
between a pairlist and a list (except that a pairlist of length 0
is 'NULL'). So, what's a pairlist?
class(.Options)
[1] "pairlist"
Some strange things about the "pairlist" type:
> showClass("pairlist")
Error in getClas
