rando (version 0.2.0)

as_function: Convert to function

Description

This function is a wrapper around rlang::as_function() which adds a two extra features:

• formulas can use .t in place of .x to be easier to understand in time-based functions

• functions can take additional named arguments.

Usage

as_function(x, env = parent.frame())

Arguments

x

a function or formula, see rlang::as_function() for more information

env

Environment in which to fetch the function in case x is a string

Value

Either:

• the function as it is passed to as_function(), whether as a string or a name

• the function derived from a formula, where the first argument is passed as ., .x or .t, the second argument is passed as .y and any other named arguments are passed as they are named

Examples

# NOT RUN {
f1 <- as_function(mean)
f1(1:10)

f2 <- as_function("sum")
f2(1,2,3)

f3 <- as_function(~.x + 1)
f3(9)

f4 <- as_function(~ .t + 1)
f4(10)

f5 <- as_function(~.x + .y)
f5(1,2)

f6 <- as_function(~ .t + alpha)
f6(10, alpha = 2)

# }