Call on.exit() in a parent function
The function on.exit() is often used to perform tasks when the
current function exits. This exit_call() function allows calling a
function when a parent function exits (thinking of it as inserting an
on.exit() call into the parent function).
exit_call(fun, n = 2, ...)
fun |
A function to be called when the parent function exits. |
n |
The parent frame number. For |
... |
Other arguments to be passed to |
This function was inspired by Kevin Ushey: https://yihui.org/en/2017/12/on-exit-parent/
f = function(x) {
print(x)
xfun::exit_call(function() print("The parent function is exiting!"))
}
g = function(y) {
f(y)
print("f() has been called!")
}
g("An argument of g()!")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.