CoreData saveContext with if/return transposition

gistfile1.swift

    func saveContext () {
        return if self.managedObjectContext == nil
        return if self.managedObjectContext?.hasChanges == false
        
        var error: NSError? = nil
        return if self.managedObjectContext?.save(&error) == true
        
        NSLog("Unresolved error \(error), \(error!.userInfo)")
        abort()
    }