assertive (version 0.1-7)

assert_is_a_number: Is the input numeric?

Description

Checks to see if the input is numeric.

Usage

assert_is_a_number(x)

  assert_is_numeric(x)

  is_a_number(x, .xname = get_name_in_parent(x))

  is_numeric(x, .xname = get_name_in_parent(x))

Arguments

x

Input to check.

.xname

Not intended to be used directly.

Value

• is_numeric wraps is.numeric, providing more information on failure. is_a_number returns TRUE if the input is numeric and scalar. The assert_* functions return nothing but throw an error if the corresponding is_* function returns FALSE.

See Also

is.numeric and is_scalar.

Examples

assert_is_numeric(1:10)
assert_is_a_number(pi)
assert_is_a_number(1L)
assert_is_a_number(NA_real_)
#These examples should fail.
assert_is_numeric(c(TRUE, FALSE))
assert_is_a_number(1:10)
assert_is_a_number(numeric())