Has method in R

In R, you can check if a class has a particular method using the methods function. This function returns all the methods for a particular generic function or class. You can use this to check if a class has a particular method or not.

Here's an example. Let's say you have a class MyClass and you want to check if it has a method named myMethod. You can use the following code:

# define a class
setClass("MyClass",
  slots = list(
  slot1 = "character",
  slot2 = "numeric"
  )
)
# define a method

setMethod("myMethod", "MyClass", function(x) {

  print("Hello World!")

})
# check if the class has the method

methods("myMethod")

This will output:

[1] myMethod

This means that the class MyClass has a method named myMethod. If the output would have been empty, it would mean that the class does not have a method with the given name.