s4 - setMethod for two different object signature in R -


how make using 1 setmethod function section same in following 2 line codes? signature("triangle|square"). thank you.

setmethod("sides", signature("triangle"), function(object) 3) setmethod("sides", signature("square"), function(object) 3)

the usual approach is

.sides_body = function(object) 3 setmethod("sides", "triangle", .sides_body) setmethod("sides", "square", .sides_body)

unless there class relationship , definition same across classes

setclass("shape") setclass("triangle", contains="shape") setclass("square", contains="shape") setclass("circle", contains="shape") setmethod("sides", "shape", function(boject) 3) setmethod("sides", "circle", function(object) inf)

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