Hi Martin
I am re reading all the mail we exchange with new eyes because of all
the thing I learn in the past few weeks. That very interesting and some
new question occurs...
***********************************
Once, you speak about callGeneric :
setClass("A", representation(x="numeric"))
setClass("C", contains=c("A"))
setMethod("show", "A", function(object) cat("A\n"))
setMethod("show", "C", function(object) {
callGeneric(as(object, "A"))
cat("C\n")
})
new("C")
Considere the following definition (that you more or less teach me with
your yesterday remarques...) :
setMethod("show", "C", function(object) {
callNextMethod()
cat("C\n")
})
In this case, is there any difference between the former and the latter ?
Which one would you use ?
(I get that in more complicate case, for example if
setClass("C", contains=c("A","B")), it might be more complicate to use
the latter, right ?)
*************************
This works :
setMethod("initialize","B",
function(.Object,..., yValue){
callNextMethod(.Object, ..., y=yValue)
return(.Object)
})
new("B",yValue=3)
but this does not :
setMethod("initialize","B",
function(.Object, yValue){
callNextMethod(.Object, y=yValue)
return(.Object)
})
new("B",yValue=3)
Why ?
Is there any help page about ... ?
**************************
showMethods gives the list of all the method. Is there a way to see all
the method for a specific signature IN THE ORDER they will be call by
callNextMethod ?
If ANY <- D <- E, a method that will gives :
Function "initialize":
.Object = "E"
.Object = "D"
.Object = "ANY"
Thanks for your help
And happy easter eggs !
Christophe
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