Adding Count operation to Context

[LuizZak]

Short description

Adds a method Context.count<T> and implement it in the NSManagedObjectContext extension.

Solution

Counting number of results without getting the objects is a useful functionality, specially when the objects are heavy-weight to fetch simply to be counted and then discarded.

Implementation

• [√] Add new protocol method Context.count<T: Entity>(_:) throws -> Int;
• [√] Implement this protocol on existing extension of NSManagedObjectContext with other protocol requirements.

GIF

CoreData with brand new count method:

...that gives 02 (two) UserEntity instances.