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...2007-07-11 r42199) > library(EBImage) > a <- Image(0, c(2,2)) > class(a+a) [1] "Image" attr(,"package") [1] "EBImage" Now, in the yesterday's revision of R2.6 I get the following: version.string R version 2.6.0 Under development (unstable) (2007-07-21 r42284) > library(EBImage) > a <- Image(0, c(2,2)) > class(a+a) [1] "array" Is this the intended behavior to fall back to the base class (same for *,/,-)? If yes, could someone point me to the following two things: what are the reasons behind and WHAT operators and functions have b...

Hi, I am puzzled with serialize(). It comes down generating identical hash codes for (apparently) identical objects using digest::digest(), which in turn relies on serialize(). Here is an example illustration the issue: ser <- function(object, ...) { list( names = names(object), namesRaw = charToRaw(names(object)), ser = serialize(names(object), connection=NULL, ascii=FALSE)