parent_promise {pryr} | R Documentation |
Find the parent (first) promise.
parent_promise(x)
x |
unquoted name of promise to find initial value for for. |
f <- function(x) g(x) g <- function(y) h(y) h <- function(z) parent_promise(z) h(x + 1) g(x + 1) f(x + 1)