Oh dear, this *is* quite a penible mess :
> N2 _ lapply(NULL, sum)
> N2
NULL> is.null(N2)
[1] TRUE> is.list(NULL)
[1] FALSE> is.list(N2)
[1] TRUE
---- i.e., N2 is ``almost'' like NULL but not quite !
---- I found the bug in a version of the following:
> array(1:6, dim=3:1, dimnames=NULL)
, , 1
[,1] [,2]
[1,] 1 4
[2,] 2 5
[3,] 3 6
> array(1:6, dim=3:1, dimnames=N2)
Error: length of dimnames must match that of dims
---------------
Martin Maechler <maechler@stat.math.ethz.ch>
http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum SOL G1; Sonneggstr.33
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1086 <><
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