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Original Raw

surprising behaviour of names<-

Stavros Macrakis 
I think the following shows what Peter was referring to:

In this case, there is only one pointer to the value of x:

x <- c(1,2)
foo <NA>
   1    2
foo <NA>
   1    2

In this case, there are two:
foo <NA>
   1    2
[1] 1 2
[1] 1 2

It seems as though `names<-` and the like cannot be treated as R
functions (which do not modify their arguments) but as special
internal routines which do sometimes modify their arguments.

          -s

Thread (49 messages)

Wacek Kusnierczyk surprising behaviour of names<- Mar 10 Peter Dalgaard surprising behaviour of names<- Mar 10 Wacek Kusnierczyk surprising behaviour of names<- Mar 10 Stavros Macrakis surprising behaviour of names<- Mar 10 Wacek Kusnierczyk surprising behaviour of names<- Mar 10 Wacek Kusnierczyk surprising behaviour of names<- Mar 10 Wacek Kusnierczyk surprising behaviour of names<- Mar 10 Simon Urbanek surprising behaviour of names<- Mar 11 Simon Urbanek surprising behaviour of names<- Mar 11 Wacek Kusnierczyk surprising behaviour of names<- Mar 11 Wacek Kusnierczyk surprising behaviour of names<- Mar 11 Berwin A Turlach surprising behaviour of names<- Mar 12 Berwin A Turlach surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Berwin A Turlach surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Berwin A Turlach surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Berwin A Turlach surprising behaviour of names<- Mar 12 Simon Urbanek surprising behaviour of names<- Mar 12 G. Jay Kerns surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Joshua Ulrich surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 12 Berwin A Turlach surprising behaviour of names<- Mar 12 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 Berwin A Turlach surprising behaviour of names<- Mar 13 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 William Dunlap surprising behaviour of names<- Mar 13 Tony Plate surprising behaviour of names<- Mar 13 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 Tony Plate surprising behaviour of names<- Mar 13 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 Berwin A Turlach surprising behaviour of names<- Mar 13 Wacek Kusnierczyk surprising behaviour of names<- Mar 13 Thomas Lumley surprising behaviour of names<- Mar 14 Berwin A Turlach surprising behaviour of names<- Mar 14 Wacek Kusnierczyk surprising behaviour of names<- Mar 14 Wacek Kusnierczyk surprising behaviour of names<- Mar 15 Berwin A Turlach surprising behaviour of names<- Mar 15 Thomas Lumley surprising behaviour of names<- Mar 16 Wacek Kusnierczyk surprising behaviour of names<- Mar 16 Wacek Kusnierczyk surprising behaviour of names<- Mar 16