Check that n is finite, non-NA scalar that
is an integer or integerish (ie is equal to round(n)),
and optionally within a specified range
and divisible by a specified number.
Usage
check_n(n, nm_n, min, max, divisible_by)
Arguments
- n
A whole number
- nm_n
Name for 'n' to be used in error messages
- min
Minimum value 'n' can take. Can be NULL.
- max
Maximum values 'n' can take. Can be NULL.
- divisible_by
'n' must be divisible by this. Can be NULL.
Value
If all tests pass, check_n() returns TRUE invisibly.
Otherwise it throws an error.
Examples
check_n(10, nm_n = "count", min = 0, max = NULL, divisible_by = 1)
check_n(10, nm_n = "count", min = NULL, max = NULL, divisible_by = NULL)
check_n(10, nm_n = "n", min = 5, max = 10, divisible_by = 2)
