Capture the call associated with a promise.
This is an alternative to subsitute that performs one job, and so gives a stronger signal regarding the intention of your code. It returns an error if the name is not associated with a promise.
uneval(x)
x |
unquoted variable name that refers to a promise. An error will be thrown if it's not a promise. |
Other promise tools: is_promise
f <- function(x) {
uneval(x)
}
f(a + b)
f(1 + 4)
delayedAssign("x", 1 + 4)
uneval(x)
x
uneval(x)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.