// UserDefaultsExtensions.swift - Copyright 2024 SwifterSwift
|
|
#if canImport(Foundation) && !os(Linux)
|
import Foundation
|
|
// MARK: - Methods
|
|
public extension UserDefaults {
|
/// SwifterSwift: get object from UserDefaults by using subscript.
|
///
|
/// - Parameter key: key in the current user's defaults database.
|
subscript(key: String) -> Any? {
|
get {
|
return object(forKey: key)
|
}
|
set {
|
set(newValue, forKey: key)
|
}
|
}
|
|
/// SwifterSwift: Float from UserDefaults.
|
///
|
/// - Parameter key: key to find float for.
|
/// - Returns: Float object for key (if exists).
|
func float(forKey key: String) -> Float? {
|
return object(forKey: key) as? Float
|
}
|
|
/// SwifterSwift: Date from UserDefaults.
|
///
|
/// - Parameter key: key to find date for.
|
/// - Returns: Date object for key (if exists).
|
func date(forKey key: String) -> Date? {
|
return object(forKey: key) as? Date
|
}
|
|
/// SwifterSwift: Retrieves a Codable object from UserDefaults.
|
///
|
/// - Parameters:
|
/// - type: Class that conforms to the Codable protocol.
|
/// - key: Identifier of the object.
|
/// - decoder: Custom JSONDecoder instance. Defaults to `JSONDecoder()`.
|
/// - Returns: Codable object for key (if exists).
|
func object<T: Codable>(_ type: T.Type, with key: String, usingDecoder decoder: JSONDecoder = JSONDecoder()) -> T? {
|
guard let data = value(forKey: key) as? Data else { return nil }
|
return try? decoder.decode(type.self, from: data)
|
}
|
|
/// SwifterSwift: Allows storing of Codable objects to UserDefaults.
|
///
|
/// - Parameters:
|
/// - object: Codable object to store.
|
/// - key: Identifier of the object.
|
/// - encoder: Custom JSONEncoder instance. Defaults to `JSONEncoder()`.
|
func set<T: Codable>(object: T, forKey key: String, usingEncoder encoder: JSONEncoder = JSONEncoder()) {
|
let data = try? encoder.encode(object)
|
set(data, forKey: key)
|
}
|
}
|
|
#endif
|
