how to retrive all CNContactStore from device without filter

Question

I'm trying to insert into var contacts: [CNContact] = [] the var store = CNContactStore() but I did not find the right code for this job, i found this function that I need to give that a name

func findContactsWithName(name: String) {
    AppDelegate.sharedDelegate().checkAccessStatus({ (accessGranted) -> Void in
        if accessGranted {
            dispatch_async(dispatch_get_main_queue(), { () -> Void in
                do {
                    let predicate: NSPredicate = CNContact.predicateForContactsMatchingName(name)
                    let keysToFetch = [CNContactGivenNameKey, CNContactFamilyNameKey, CNContactBirthdayKey, CNContactViewController.descriptorForRequiredKeys()]
                    self.contacts = try self.store.unifiedContactsMatchingPredicate(predicate, keysToFetch:keysToFetch)


                    self.tableView.reloadData()
                }
                catch {
                    print("Unable to refetch the selected contact.")
                }
            })
        }
    })
}

I want to insert self.contacts all the records and not only one with name equal

Answer 1

/// The default key descriptors to fetch
public var defaultFetchKeys: [String] = [CNContactGivenNameKey,
                                         CNContactFamilyNameKey,
                                         CNContactPhoneNumbersKey,
                                         CNContactImageDataAvailableKey,
                                         CNContactThumbnailImageDataKey]

/**
     Fetch contacts from the user's device

     - parameter sortOrder: The sort order that should be used. Default none.
     - returns: A list of contacts
     */
    public func fetchContacts(withSortOrder sortOrder: CNContactSortOrder = .givenName,
                              qos: DispatchQoS.QoSClass = .background) -> Promise<[Contact]>
    {

        return Promise { seal in

            DispatchQueue.global(qos: qos).async {

                let store = CNContactStore()
                var contacts = [Contact]()

                /// A `PhoneNumberKit` object used to parse and format numbers (expensive!)
                let phoneNumberKit = PhoneNumberKit()

                let request = CNContactFetchRequest(keysToFetch: self.defaultFetchKeys as [CNKeyDescriptor])
                request.sortOrder = sortOrder
                request.unifyResults = true

                do {

                    try store.enumerateContacts(with: request) { contact, _ in

                        if let user = Contact(contact: contact, kit: phoneNumberKit) {
                            contacts.append(user)
                        }

                    }

                    DispatchQueue.main.async {
                        seal.fulfill(contacts)
                    }

                } catch {

                    DispatchQueue.main.async {
                        seal.reject(error)
                    }

                }

            }

        }

    }

I am also using PhoneNumberKit to standardise all numbers and PromiseKit, to chain my requests, but you can pretty much adjust it whatever you want it.