One possible way to transform the S4 slot selector @
into a generic function is to define a generic accessor function for each slot in the S4 object, using the following syntax:
get_my_slot <- function(x) {
UseMethod("get_my_slot")
}
get_my_slot.my_class <- function(x) {
slot(x, "my_slot")
}
In this example, my_slot
is the name of the slot that we want to access. We define a generic function get_my_slot
that dispatches on the class of the S4 object, and a method get_my_slot.my_class
that extracts the value of my_slot
using the slot
function.
To use this generic function, we can call get_my_slot
with the S4 object as the argument:
my_object <- new("my_class", my_slot = "my_value")
get_my_slot(my_object)
# Output: "my_value"
This approach allows us to define custom accessor functions for each slot in the S4 object, providing greater flexibility and modularity in our code.
Asked: 2021-11-11 11:00:00 +0000
Seen: 10 times
Last updated: Oct 05 '22