are_chr_ish             Check if an object can be safely coerced to
                        character
are_dbl_ish             Check if an object can be safely coerced to
                        double
are_fct_ish             Check if an object can be safely coerced to a
                        factor
are_int_ish             Check if an object can be safely coerced to
                        integer
are_lgl_ish             Check if an object can be safely coerced to
                        logical
object_type             Identify the class, type, etc of an object
regex_must_match        Create a regex matching rule
regex_must_not_match    Create a 'must not match' regex rule
stabilize_arg           Ensure an argument meets expectations
stabilize_chr           Ensure a character argument meets expectations
stabilize_dbl           Ensure a double argument meets expectations
stabilize_fct           Ensure a factor argument meets expectations
stabilize_int           Ensure an integer argument meets expectations
stabilize_lgl           Ensure a logical argument meets expectations
