Function unique

unique<T>(a: Validator<T>, f?: (value: T) => Primitive): Validator<T[]>
Every element must validate and be unique by f (default: the validated element itself).
Type Parameters
- T
Parameters
- a: Validator<T>
- Optionalf: (value: T) => Primitive
Returns Validator<T[]>
- Defined in containers.ts:140