A compact syntax for anonymous functions.

A compact syntax for anonymous functions.

f(..., .env = parent.frame())

Arguments

...

The last argument is the body of the function, all others are arguments to the function. If there is only one argument, the formals are guessed from the code.

.env

parent environment of the created function

Value

a function

Examples

f(x + y)
#> function (x, y) 
#> x + y
#> <environment: 0x58b580766210>
f(x + y)(1, 10)
#> [1] 11
f(x, y = 2, x + y)
#> function (x, y = 2) 
#> x + y
#> <environment: 0x58b580766210>

f({y <- runif(1); x + y})
#> function (x) 
#> {
#>     y <- runif(1)
#>     x + y
#> }
#> <environment: 0x58b580766210>