as.function Convert Object to Function
as.function is a generic function which is used to convert objects to functions.as.function.default works on a list x, which should contain the concatenation of a formal argument list and an expression or an object of mode "call" which will become the function body. The function will be defined in a specified environment, by default that of the caller.
## Default S3 method:
as.function(x, envir = parent.frame(), ...)
x object to convert, a list for the default method.
... additional arguments, depending on object
envir environment in which the function should be defined
The desired function.
For ancient historical reasons, envir = NULL uses the global environment rather than the base environment. Please use envir = globalenv() instead if this is what you want, as the special handling of NULL may change in a future release.
See Alsofunction; alist which is handy for the construction of argument lists, etc.
as.function(alist(a = , b = 2, a+b)) as.function(alist(a = , b = 2, a+b))(3)