Hello
When I create a new instance of an S4 class in R, I would like the newly
created object to have a unique id field. I try to achieve it through
UUIDgenerate() from the uuid package. The problem is that I obtain the
same UUID at every new object instance :
library(uuid)
setClass("C",
representation=representation(
id = "character"
),
prototype = prototype(
id = UUIDgenerate(use.time = TRUE))
)
new("C")
An object of class "C" Slot "id": [1]
"1e07d7c2-2d71-11e6-b5e1-e1f59d8ccf09"
new("C")
An object of class "C" Slot "id": [1]
"1e07d7c2-2d71-11e6-b5e1-e1f59d8ccf09"
new("C")
An object of class "C" Slot "id": [1]
"1e07d7c2-2d71-11e6-b5e1-e1f59d8ccf09"
Calling UUIDgenerate() successively at the R command line produces
different UUIDS each time.
Where do I go wrong?
Thanks
Servet
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