Realm.io Optional Properties

I have just started using Realm.io on iOS and am attempting to populate objects but am getting the following:

Invalid value nil for property

How can I make a property optional?

What are .objects realm?

Realm objects are regular Swift or Objective-C classes, but they also bring a few additional features like live queries. The Swift SDK memory maps Realm objects directly to native Swift or Objective-C objects, which means there's no need to use a special data access library, such as an ORM .

What is @persisted in realm Swift?

@Persisted is used to declare properties on Object subclasses which should be managed by Realm. Int, Bool, String, ObjectId and Date properties can be indexed by passing indexed: true to the initializer.

You can’t at the moment. Only relationships can be nil at this point. We’re working on adding this soon though!