R-alpha: inconsistency R/Splus of sample()

[Ross Ihaka]

Friedrich Leisch writes:
 > 
 > The function sample has different behaviour under R and Splus when
 > called with zero sample size:
 > 
 > R> x<-rnorm(10)
 > R> sample(x,0)
 > Error in sample(length(x), size, replace) : invalid second argument
 > 
 > Splus> x<-rnorm(10)
 > Splus> sample(x,0)
 > numeric(0)
 > 
 > 
 > IMO the Splus behaviour makes more sense, because it returns the
 > requested `sample' of size 0.

Done.  (A one character change).
	Ross
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