Why not use UserDefaults to store Codable objects 😉
Swift Objective-C Ruby
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You love Swift's Codable protocol and use it everywhere, who doesn't! Here is an easy and very light way to store and retrieve -reasonable amount 😅- of Codable objects, in a couple lines of code!


CocoaPods (Recommended)

To integrate UserDefaultsStore into your Xcode project using CocoaPods, specify it in your Podfile:

pod 'UserDefaultsStore'

To integrate UserDefaultsStore into your Xcode project using Carthage, specify it in your Cartfile:

github "omaralbeik/UserDefaultsStore" ~> 1.0
Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler. It is in early development, but UserDefaultsStore does support its use on supported platforms.

Once you have your Swift package set up, adding UserDefaultsStore as a dependency is as easy as adding it to the dependencies value of your Package.swift.

import PackageDescription
dependencies: [
    .package(url: "https://github.com/omaralbeik/UserDefaultsStore.git", from: "1.0.2")

Add the Sources folder to your Xcode project.


Let's say you have 2 structs; User and Laptop defined as bellow:

struct User: Codable {
    var id: Int
    var firstName: String
    var lastName: String
    var laptop: Laptop?
struct Laptop: Codable {
    var model: String
    var name: String

Here is how you store them in UserDefaultsStore:

1. Conform to the Identifiable protocol and set the idKey property

The Identifiable protocol lets UserDefaultsStore knows what is the unique id for each object.

struct User: Codable, Identifiable {
    static let idKey = \User.id
struct Laptop: Codable, Identifiable {
    static let idKey = \Laptop.model
  • Notice how User uses Int for its id, while Laptop uses String. Swift rocks 🤘

2. Create UserDefaults Stores

let usersStore = UserDefaultsStore<User>(uniqueIdentifier: "users")!
let laptopsStore = UserDefaultsStore<Laptop>(uniqueIdentifier: "laptops")!

3. Voilà, you're all set!

let macbook = Laptop(model: "A1278", name: "MacBook Pro")
let john = User(userId: 1, firstName: "John", lastName: "Appleseed", laptop: macbook)

// Save an object to a store
try! usersStore.save(john)

// Save an array of objects to a store
try! usersStore.save([jane, steve, jessica])

// Get an object from store
let user = store.object(withId: 1)

// Get all objects in a store
let laptops = laptopsStore.allObjects()

// Check if store has an object
print(usersStore.hasObject(withId: 10)) // false

// Iterate over all objects in a store
laptopsStore.forEach { laptop in

// Delete an object from a store
usersStore.delete(withId: 1)

// Delete all objects in a store

// Know how many objects are stored in a store
let usersCount = usersStore.objectsCount


  • iOS 8.0+ / macOS 10.10+ / tvOS 9.0+ / watchOS 2.0+
  • Xcode 9+
  • Swift 4+


Special thanks to Paul Hudson for his article on how to use Swift keypaths to write more natural code.


Icon made by freepik from flaticon.com.


UserDefaultsStore is released under the MIT license. See LICENSE for more information.