| as_function {rlang} | R Documentation |
as_function() transform objects to functions. It fetches
functions by name if supplied a string or transforms
quosures to a proper function.
as_closure() first passes its argument to as_function(). If
the result is a primitive function, it regularises it to a proper
closure (see is_function() about primitive functions).
as_function(x, env = caller_env()) as_closure(x, env = caller_env())
x |
A function or formula. If a function, it is used as is. If a formula, e.g. |
env |
Environment in which to fetch the function in case |
f <- as_function(~ . + 1)
f(10)
# Primitive functions are regularised as closures
as_closure(list)
as_closure("list")
# Operators have `.x` and `.y` as arguments, just like lambda
# functions created with the formula syntax:
as_closure(`+`)
as_closure(`~`)