On 05/09/2011 09:52 AM, Duncan Murdoch wrote:
In general, the expression x[[1:2]] is not meaningful, as the elements
of the list may be of different type, with no way to concatenate them.
That's the wrong explanation: the expression x[[1:2]] is meaningful,
but it means the same thing as x[[1]][[2]], not
c(x[[1]], x[[2]]).
Thank you for the clarification; I stand corrected.
_______________________
Patrick Breheny
Assistant Professor
Department of Biostatistics
Department of Statistics
University of Kentucky
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