| assert_empty_dots | Assert that dots are empty |
| is_base64 | Check if an argument is a base64 string |
| is_base64url | Check if an argument is a base64url string |
| is_bic | Check if an argument is a BIC/SWIFT code string |
| is_color_hex | Check if an argument is a hex color string |
| is_cuid2 | Check if an argument is a CUID2 string |
| is_cusip | Check if an argument is a valid CUSIP string |
| is_doi | Check if an argument is a DOI string |
| is_email | Check if an argument is an email address string |
| is_figi | Check if an argument is a valid FIGI string |
| is_hex | Check if an argument is a hexadecimal string |
| is_hostname | Check if an argument is a hostname string |
| is_iban | Check if an argument is a valid IBAN string |
| is_ipv4 | Check if an argument is an IPv4 address string |
| is_ipv6 | Check if an argument is an IPv6 address string |
| is_isbn | Check if an argument is an ISBN string |
| is_isin | Check if an argument is a valid ISIN string |
| is_iso_date | Check if an argument is an ISO 8601 date string |
| is_iso_datetime | Check if an argument is an ISO 8601 datetime string |
| is_issn | Check if an argument is an ISSN string |
| is_lei | Check if an argument is a valid LEI string |
| is_mac | Check if an argument is a MAC address string |
| is_md5 | Check if an argument is an MD5 hash string |
| is_mime | Check if an argument is a MIME type string |
| is_nanoid | Check if an argument is a Nano ID string |
| is_orcid | Check if an argument is an ORCID string |
| is_sedol | Check if an argument is a valid SEDOL string |
| is_semver | Check if an argument is a semantic versioning string |
| is_sha256 | Check if an argument is a SHA-256 hash string |
| is_ulid | Check if an argument is a ULID string |
| is_url | Check if an argument is a URL string |
| is_uuid | Check if an argument is a UUID string |
