ExtensionKit VS userdefault

Here's the code if you want to try it out.

I added a few to a new library I made today, it's called ExtensionKit

// Mezhevikin Alexey: https://github.com/mezhevikin/userdefault import Foundation import Combine @propertyWrapper public struct UserDefault { private let key: String private var value: Value private let defaultValue: Value private var container: UserDefaults = .standard private let publisher = PassthroughSubject() public init( _ key: String, _ defaultValue: Value, _ container: UserDefaults = .standard ) { self.key = key self.value = container.object(forKey: key) as? Value ?? defaultValue self.defaultValue = defaultValue self.container = container } public var wrappedValue: Value { get { value } set { value = newValue if let optional = value as? AnyOptional, optional.isNil { container.removeObject(forKey: key) } else { container.set(value, forKey: key) } publisher.send(value) } } public var projectedValue: AnyPublisher { publisher.eraseToAnyPublisher() } } public protocol AnyOptional { var isNil: Bool { get } } extension Optional: AnyOptional { public var isNil: Bool { self == nil } } extension UserDefault where Value: ExpressibleByNilLiteral { public init(_ key: String, _ container: UserDefaults = .standard) { self.init(key, nil, container) } }