Realm for iOS. Lazy data loading?

Question

I am trying to use Realm in my new project. But am interested in:

I have 10k objects of MyType. And I want to filter and display only most recent 10 of them.

Will all of them be moved to RAM to operate/filter them? 'realm.objects(MyType).filter(...)' - I'm just worried about 10k objects and their data would litter the app memory in case of query like above.

No? It's OK?

Answer 1

When you filter objects, your query is constructed in a C++ DSL, which is efficiently evaluated, bringing in some optimizations to run it fast depending on the concrete property types. Accessor objects are instantiated by the binding lazily when you retrieve each object out of your results. So in your case only for the first 10 objects.