assert_all_are_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_any_are_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_all_are_non_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_any_are_non_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_all_are_missing_or_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_any_are_missing_or_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_all_are_non_missing_nor_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_any_are_non_missing_nor_empty_character(x, severity = getOption("assertive.severity", "stop"))
assert_all_strings_are_not_missing_nor_empty(x, severity = getOption("assertive.severity", "stop"))
assert_any_strings_are_not_missing_nor_empty(x, severity = getOption("assertive.severity", "stop"))
assert_is_an_empty_string(x, severity = getOption("assertive.severity", "stop"))
assert_is_a_non_empty_string(x, severity = getOption("assertive.severity", "stop"))
assert_is_a_missing_or_empty_string(x, severity = getOption("assertive.severity", "stop"))
assert_is_a_non_missing_nor_empty_string(x, severity = getOption("assertive.severity", "stop"))
is_empty_character(x, .xname = get_name_in_parent(x))
is_non_empty_character(x, .xname = get_name_in_parent(x))
is_missing_or_empty_character(x, .xname = get_name_in_parent(x))
is_non_missing_nor_empty_character(x, .xname = get_name_in_parent(x))
is_not_missing_nor_empty_character(x)
is_an_empty_string(x, .xname = get_name_in_parent(x))
is_a_non_empty_string(x, .xname = get_name_in_parent(x))
is_a_missing_or_empty_string(x, .xname = get_name_in_parent(x))
is_a_non_missing_nor_empty_string(x, .xname = get_name_in_parent(x))