On 29/03/2009 2:14 PM, Stavros Macrakis wrote:
On Sun, Mar 29, 2009 at 6:15 AM, Duncan Murdoch <murd...@stats.uwo.ca> wrote:
On 28/03/2009 4:57 PM, Stavros Macrakis wrote:
On Sat, Mar 28, 2009 at 7:53 AM, Duncan Murdoch <murd...@stats.uwo.ca>
wrote:
1) Where does the name 'xtfrm' come from?
I don't know.
Hmm. If the origins of the name are lost in the mists of history,
I'm flattered, but I feel obliged to point out that just because I don't
know something doesn't mean the information does not exist.
Duncan Murdoch
perhaps a more mnemonic/intuitive one could be found?
2) Why isn't xtfrm of a numeric vector the identity function?
"Because the implementation does that". It's a one liner:...
Yes, I was asking *why* the implementation does that.
The identity function would probably be faster, but why optimize cases that are
never needed?
A better optimization would be just to use order(x), not order(xtfrm(x)).
Why should the *calling* function have the burden of type dispatching?
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