This function verifies whether all of the arguments of another function already have assigned values. If an argument has a default value but there isn't a corresponding variable, it creates that variable.
test_fun(f, force_default = FALSE)
A function
Whether or not to assign the default value to arguments that already have assigned values
if (FALSE) {
f <- function(a, b = 3) {
a * b
}
test_fun(f)
a
b
b <- 5
test_fun(f)
a
b
test_fun(f, TRUE)
a
b
a <- 2
test_fun(f)
a
b
}