How to Delete Object from Core Data in Swift 3

Swift 3 Core Data Delete Object

The result of a fetch is an array of managed objects, in your case
[Event], so you can enumerate the array and delete all matching objects.
Example (using try? instead of try! to avoid a crash in the case
of a fetch error):

if let result = try? context.fetch(fetchRequest) {
    for object in result {
        context.delete(object)
    }
}

do {
    try context.save()
} catch {
    //Handle error
}

If no matching objects exist then the fetch succeeds, but the resulting
array is empty.

Note: In your code, object has the type [Event] and therefore in

context.delete(object)

the compiler creates a call to the

public func delete(_ sender: AnyObject?)

method of NSObject instead of the expected

public func delete(_ object: NSManagedObject)

method of NSManagedObjectContext. That is why your code compiles
but fails at runtime.

Swift 3: How to delete the single record in the Core Data when a UIbutton is Pressed

    let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "FavProfile")
    let predicate = NSPredicate(format: "profileID == %@", id as CVarArg)
    fetchRequest.predicate = predicate
    let moc = getContext()
    let result = try? moc.fetch(fetchRequest)
    let resultData = result as! [FavProfile]

    for object in resultData {
        moc.delete(object)
    }

    do {
        try moc.save()
        print("saved!")
    } catch let error as NSError  {
        print("Could not save \(error), \(error.userInfo)")
    }

use predicate for profileID.

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