call_and_name: Call a function, and give the result names.
In assertive.base: A Lightweight Core of the 'assertive' Package

Description Usage Arguments Value Note See Also Examples

Calls a function, and names the result with the first argument.

1	call_and_name(fn, x, ...)

`fn`	A function to call. See note below.
`x`	The first input to `fn`.
`...`	Optional additional inputs to `fn`.

The result of fn(x, ...), with names given by the argument x.

The function, fn, should return an object with the same length as the input x. For speed and simplicity, this isn't checked; it is up to the developer of the assertion to make sure that this condition holds.

cause and na.

call_and_name(is.finite, c(1, Inf, NA))

# Make sure that the output is the same size as the input.
# Don't do this:
dont_stop(call_and_name(isTRUE, list(TRUE, FALSE, NA)))
# Do this instead:
call_and_name(
  Vectorize(isTRUE, SIMPLIFY = FALSE),
  list(TRUE, FALSE, NA)
)