split nukes names() (PR#371)

[Kurt Hornik]

>>>>> cberry  writes:

>> split(c(a=1,b=2),c(1,2))
> $"1"
> [1] 1

> $"2"
> [1] 2

> The documentation does not *promise* that names will survive, but in
> Splus3.4, they do. This broke a function that worked under S+ that
> used the names attribute of elements in the components returned by
> split.

I don't think that names in x should be preserved here.  The names of
the returned list are obtained from the levels of the split factor f
(which, in your case, are "1" and "2").

-k
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