簡単なカウンターの実装。こんな感じかな。
setGeneric("count", function(object, add = 10) standardGeneric("count"))
setClass("Counter1", representation(ct = "numeric", remark = "character"))
setMethod("initialize", "Counter1", function(.Object, ct = 5){
.Object@ct <- ct
.Object@remark <- "Hello"
.Object }
)
setMethod("count", "Counter1",
function(object, add){
object@ct <- object@ct + add
return(object)
}
)
setMethod("show", "Counter1",
function(object){
cat(paste("Here, ", object@ct, "\n", sep = ""))
}
)
counter1 <- new("Counter1")
counter2 <- count(counter1,3)
counter2 <- count(counter2,50)
counter3 <- new("Counter1",ct = 100)
counter3 <- count(counter3)
