Testing equality of two functions in R [duplicate]

Question

Is there a way to determine if the text of two different functions is identical?

x <- function(x) print(x + 2)
y <- function(x) print(x + 2)
identical(x, y)
[1] FALSE
identical(mget("x"), mget("y"))
[1] FALSE
identical(unname(mget("x")), unname(mget("y")))
[1] FALSE

Answer 1

I think this is a good method. It works for many different objects:

all.equal(x,y)
[1] TRUE

Answer 2

Using diffobj package:

library(diffobj)

x <- function(x) print(x + 2)
y <- function(x) print(x + 2)

diffPrint(target = x, current = y)

Wrapping it in any() will give TRUE/FALSE:

any(diffPrint(target = x, current = y))
# FALSE