uneval: Capture the call associated with a promise.

In pryr: Tools for Computing on the Language

Description

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.

Usage

uneval(x)

Arguments

x	unquoted variable name that refers to a promise. An error will be thrown if it's not a promise.

See Also

Other promise tools: is_promise

Examples

f <- function(x) {
   uneval(x)
}
f(a + b)
f(1 + 4)

delayedAssign("x", 1 + 4)
uneval(x)
x
uneval(x)

pryr documentation built on May 2, 2019, 9:58 a.m.