Force evaluation of all arguments to a function

Forces the evaluation of all arguments in the calling environment of this function.

Usage

force_all(...)

Arguments

...

arguments captured by ... are also evaluated if passed via ...

Value

NULL invisibly

Details

Use force_all() as syntactic sugar to force evaluation of all arguments to a function and thereby circumvent lazy evaluation. If called from within a function with ... as formal argument, use force_all(...) to force evaluation of arguments captured by ....

See also

force()

Examples

affine <- function(a, b) {
  function(x) a * x + b
}

a <- 1
b <- 1

affine_11 <- affine(a, b)

a <- 2
b <- 2

affine_11(1) # Gives 4 and not 2 due to lazy evaluation
#> [1] 4

affine_forced <- function(a, b) {
  force_all()
  function(x) a * x + b
}

a <- 1
b <- 1

affine_11 <- affine_forced(a, b)

a <- 2
b <- 2

affine_11(1) # Gives 2
#> [1] 2