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Programming language: Swift
License: MIT License
Tags: Database    
Latest version: v2.0.0

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README

tl;dr

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!


Introducing v2.0

  • Removed the Identifiable protocol in favor of Swift's Identifiable.
  • Increased deployment targets to iOS 13.0, tvOS 13.0, macOS 10.15, and watchOS 6.0.
  • Objects defined as non-final classes can now be used as well.
  • Added new generateSnapshot() and restoreSnapshot(_:) methods to generate and restore a Snapshot object that can be saved (e.g. to iCloud) and restored later.
  • Fixed a bug where objectsCount might run out of sync with the actual count of objects in store.

Installation

Swift Package Manager (Recommended) You can use The Swift Package Manager to install UserDefaultsStore by adding the proper description to your Package.swift file:

import PackageDescription

let package = Package( name: "YOUR_PROJECT_NAME", targets: [], dependencies: [ .package(url: "https://github.com/omaralbeik/UserDefaultsStore.git", from: "2.0.0") ] )

Next, add UserDefaultsStore to your targets dependencies like so: .target( name: "YOUR_TARGET_NAME", dependencies: [ "UserDefaultsStore", ] ), Then run swift package update.

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

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

github "omaralbeik/UserDefaultsStore" ~> 2.0.0

Manually Add the Sources folder to your Xcode project.

Usage

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 id property

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

struct User: Codable, Identifiable {
    ...
}
struct Laptop: Codable, Identifiable {
    var id: String { model }
    ...
}

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(id: 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)
let laptop = store.object(withId: "A1278")

// 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
    print(laptop.name)
}

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

// Delete all objects in a store
laptops.deleteAll()

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

// Create a snapshot
let snapshot = usersStore.generateSnapshot()

// Restore a pre-generated snapshot
try? usersStore.restoreSnapshot(snapshot)

Looking to store a single item only?

Use SingleUserDefaultsStore, it enables storing and retrieving a single value of Int, Double, String, or any Codable type.

Requirements

  • iOS 13.0+ / macOS 10.15+ / tvOS 13.0+ / watchOS 6.0+
  • Swift 5.0+

Thanks

Special thanks to:

Credits

Icon made by freepik from flaticon.com.

License

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


*Note that all licence references and agreements mentioned in the UserDefaultsStore README section above are relevant to that project's source code only.