Function SetUnique

SetUnique<Value, Projection>(projection, options?): PropertyDecorator
Checks if the given value is a Set without duplicate values with regard to the given projection.

Example
```
// Ensure the set does not include duplicate users.
@SetUnique<User>(user => user.id)
administrators: Set<User>
```
Type Parameters
- Value = unknown
  The type of the set's values.
- Projection = unknown
  The type returned by projection.
Parameters
- projection: ((item) => Projection)
  The function mapping each value to the value that is used for the uniqueness check.
  - - (item): Projection
    - Parameters
      item: Value
      Returns Projection
- Optional options: ValidationOptions
  Generic class-validator options.
Returns PropertyDecorator
- Defined in src/set/set-unique/set-unique.decorator.ts:26