s4_method.r
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s4_method.r
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setClass("Data",↵
slots = c(x = "numeric", y = "numeric")↵
)↵
setMethod("plot", "Data",↵
function(x, ...) {↵
plot(x@x, x@y, ...)↵
}↵
)↵
setMethod("+", c("Data", "Data"),↵
function(e1, e2) {↵
new("Data", x = e1@x + e2@x, y = e1@y + e2@y)↵
}↵
)
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