Structs§
- Contains
- Simple pattern check (contains substring — no regex dep needed).
- Email-like validation: must contain @ and a dot after @.
- MaxLength
- Maximum character length.
- MinLength
- Minimum character length.
- Range
- Numeric range validator for string-encoded numbers.
- Required
- Field value must be non-empty (after trimming).
Traits§
- Validator
- A validation rule that can be applied to a string value.