Create UnsafeSendable.swift

Sources/DoggieCore/Concurrency/UnsafeSendable.swift

@@ -0,0 +1,39 @@
+//
+//  UnsafeSendable.swift
+//
+//  The MIT License
+//  Copyright (c) 2015 - 2022 Susan Cheng. All rights reserved.
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+#if compiler(>=5.5.2) && canImport(_Concurrency)
+
+@available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *)
+@propertyWrapper
+public struct UnsafeSendable<Wrapped> : @unchecked Sendable {
+
+    public var wrappedValue: Wrapped
+
+    public init(wrappedValue: Wrapped) {
+        self.wrappedValue = wrappedValue
+    }
+}
+
+#endif