Add initialize from string key method to SwiftyUserDefault PropertyWrapper

Sources/DefaultsObserver.swift

@@ -51,7 +51,7 @@ public final class DefaultsObserver<T: DefaultsSerializable>: NSObject, Defaults
         private static func deserialize<T: DefaultsSerializable>(_ value: Any?, for key: DefaultsKey<T>) -> T.T? where T.T == T {
             guard let value = value else { return nil }
 
-            let deserialized =  T._defaults.deserialize(value)
+            let deserialized = T._defaults.deserialize(value)
 
             let ret: T.T?
             if key.isOptional, let _deserialized = deserialized, let __deserialized = _deserialized as? OptionalTypeCheck, !__deserialized.isNil {

Sources/PropertyWrappers.swift

@@ -35,6 +35,33 @@ public struct SwiftyUserDefaultOptions: OptionSet {
     }
 }
 
+
+@propertyWrapper
+public struct SwiftyDefaults<T: DefaultsSerializable> where T.T == T {
+    public let key: DefaultsKey<T>
+    private var _value: T.T
+    public var wrappedValue: T.T {
+        get { _value }
+        set {
+            _value = newValue
+            Defaults[key: key] = newValue
+        }
+    }
+    public init(keyPath: KeyPath<DefaultsKeys, DefaultsKey<T>>) {
+        self.key = Defaults.keyStore[keyPath: keyPath]
+        self._value = Defaults[key: self.key]
+    }
+    public init(key: String, defaultValue value: T) {
+        self.key = DefaultsKey(key, defaultValue: value)
+        self._value = Defaults[key: self.key]
+    }
+}
+extension SwiftyDefaults where T: OptionalType, T.Wrapped: DefaultsSerializable {
+    public init(key: String) {
+        self.init(key: key, defaultValue: T.__swifty_empty)
+    }
+}
+
 @propertyWrapper
 public final class SwiftyUserDefault<T: DefaultsSerializable> where T.T == T {
 
@@ -44,7 +71,10 @@ public final class SwiftyUserDefault<T: DefaultsSerializable> where T.T == T {
     public var wrappedValue: T {
         get {
             if options.contains(.cached) {
-                return _value ?? Defaults[key: key]
+                if let v = _value { return v }
+                let v = Defaults[key: key]
+                _value = v
+                return v
             } else {
                 return Defaults[key: key]
             }
@@ -80,8 +110,25 @@ public final class SwiftyUserDefault<T: DefaultsSerializable> where T.T == T {
         }
     }
 
+    public init(key: String, defaultValue value: T, options: SwiftyUserDefaultOptions = []) {
+        self.key = DefaultsKey(key, defaultValue: value)
+        self.options = options
+
+        if options.contains(.observed) {
+            observation = Defaults.observe(self.key) { [weak self] update in
+                self?._value = update.newValue
+            }
+        }
+    }
     deinit {
         observation?.dispose()
     }
 }
+extension SwiftyUserDefault where T: OptionalType, T.Wrapped: DefaultsSerializable {
+    public convenience init(key: String, options: SwiftyUserDefaultOptions = []) {
+        self.init(key: key, defaultValue: T.__swifty_empty, options: options)
+    }
+}
+
+
 #endif