{"id":6670,"date":"2024-12-19T20:54:12","date_gmt":"2024-12-19T12:54:12","guid":{"rendered":"https:\/\/t.n-years.com\/?p=6670"},"modified":"2024-12-19T20:54:21","modified_gmt":"2024-12-19T12:54:21","slug":"%e7%bc%96%e7%a8%8b%e8%af%ad%e8%a8%80swift-%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e4%b9%8bsendable-types","status":"publish","type":"post","link":"https:\/\/t.n-years.com\/?p=6670","title":{"rendered":"[\u7f16\u7a0b\u8bed\u8a00]Swift \u5e76\u53d1\u7f16\u7a0b\u4e4bSendable Types"},"content":{"rendered":"

\u5728 Swift \u4e2d\uff0cSendable Types<\/strong> \u662f\u4e0e\u5e76\u53d1\u7f16\u7a0b\u76f8\u5173\u7684\u4e00\u4e2a\u6982\u5ff5\uff0c\u76ee\u7684\u662f\u5e2e\u52a9\u5f00\u53d1\u8005\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u786e\u4fdd\u7c7b\u578b\u7684\u5b89\u5168\u6027\uff0c\u907f\u514d\u6570\u636e\u7ade\u6001\uff08data races\uff09\u3002\u968f\u7740\u5e76\u53d1\u6a21\u578b\u7684\u5f15\u5165\uff0c\u7279\u522b\u662f\u5728 Swift 5.5 \u4e2d\u5f15\u5165\u4e86 async\/await<\/code> \u548c actor<\/code>\uff0cSwift \u9700\u8981\u4e00\u79cd\u673a\u5236\u6765\u786e\u4fdd\u5728\u591a\u4e2a\u4efb\u52a1\u3001\u7ebf\u7a0b\u6216\u961f\u5217\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u65f6\u7684\u7c7b\u578b\u5b89\u5168\u3002Sendable Types<\/strong> \u5c31\u662f\u4e3a\u4e86\u6ee1\u8db3\u8fd9\u4e00\u9700\u6c42\u800c\u8bbe\u8ba1\u7684\u3002<\/p>\n

\u4ec0\u4e48\u662f Sendable Types\uff1f<\/h3>\n

Sendable Types<\/strong> \u662f\u4e00\u79cd\u80fd\u591f\u5b89\u5168\u5730\u8de8\u7ebf\u7a0b\u6216\u4efb\u52a1\u4f20\u9012\u7684\u7c7b\u578b\u3002\u5728\u591a\u7ebf\u7a0b\u6216\u5e76\u53d1\u4efb\u52a1\u4e2d\uff0c\u5f53\u4f60\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u6216\u4efb\u52a1\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u8fd9\u4e9b\u6570\u636e\u5728\u4e0d\u540c\u7684\u6267\u884c\u73af\u5883\u4e2d\u80fd\u5b89\u5168\u5730\u5171\u4eab\u6216\u590d\u5236\uff0c\u800c\u4e0d\u4f1a\u5bfc\u81f4\u4e0d\u53ef\u9884\u6d4b\u7684\u7ed3\u679c\u6216\u6570\u636e\u7ade\u6001\u3002\u53ea\u6709\u7b26\u5408 Sendable<\/strong> \u534f\u8bae\u7684\u7c7b\u578b\u624d\u80fd\u5728\u5e76\u53d1\u73af\u5883\u4e2d\u5b89\u5168\u5730\u4f20\u9012\u3002<\/p>\n

Sendable \u534f\u8bae<\/h3>\n

Sendable<\/code> \u534f\u8bae\u662f Swift \u63d0\u4f9b\u7684\u4e00\u79cd\u534f\u8bae\uff0c\u4efb\u4f55\u7c7b\u578b\u53ea\u8981\u7b26\u5408 Sendable<\/code> \u534f\u8bae\uff0c\u5c31\u53ef\u4ee5\u5b89\u5168\u5730\u5728\u4e0d\u540c\u7684\u4efb\u52a1\u3001\u7ebf\u7a0b\u6216\u961f\u5217\u4e4b\u95f4\u4f20\u9012\u3002Sendable<\/code> \u534f\u8bae\u786e\u4fdd\u4e86\u4f20\u9012\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\uff0c\u4ece\u800c\u907f\u514d\u6570\u636e\u7ade\u6001\u3002<\/p>\n

Sendable \u534f\u8bae\u58f0\u660e<\/h4>\n
@available(Swift 5.5, *)\npublic protocol Sendable {}<\/code><\/pre>\n
\u4e3a\u4ec0\u4e48\u9700\u8981 Sendable Types\uff1f<\/h3>\n
\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u591a\u4e2a\u4efb\u52a1\u6216\u7ebf\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u548c\u4fee\u6539\u76f8\u540c\u7684\u6570\u636e\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u6027\u548c\u7ade\u6001\u6761\u4ef6\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0cSwift \u5f15\u5165\u4e86 Sendable<\/code> \u534f\u8bae\u6765\u786e\u4fdd\u7c7b\u578b\u5728\u8de8\u7ebf\u7a0b\u6216\u4efb\u52a1\u4f20\u9012\u65f6\uff0c\u6570\u636e\u662f\u5b89\u5168\u7684\u3002<\/p>\n
    \n
  • \u5982\u679c\u4e00\u4e2a\u7c7b\u578b\u662f Sendable<\/code>\uff0c\u90a3\u4e48\u5b83\u7684\u5b9e\u4f8b\u53ef\u4ee5\u5728\u5e76\u53d1\u4efb\u52a1\u4e2d\u5b89\u5168\u5730\u4f20\u9012\u3002<\/li>\n
  • \u5982\u679c\u4e00\u4e2a\u7c7b\u578b\u4e0d\u662f Sendable<\/code>\uff0c\u90a3\u4e48\u5b83\u7684\u5b9e\u4f8b\u4e0d\u80fd\u5728\u5e76\u53d1\u4efb\u52a1\u4e4b\u95f4\u5b89\u5168\u5730\u4f20\u9012\uff0c\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002<\/li>\n<\/ul>\n
    Sendable \u7c7b\u578b\u7684\u89c4\u5219<\/h3>\n
      \n
    1. \n
      \u57fa\u672c\u7c7b\u578b<\/strong>\uff1a\u8bb8\u591a\u57fa\u7840\u7c7b\u578b\u9ed8\u8ba4\u5c31\u662f Sendable<\/code>\uff0c\u6bd4\u5982 Int<\/code>\u3001Double<\/code>\u3001String<\/code>\u3001Array<\/code> \u7b49\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u503c\u7c7b\u578b\uff08value types\uff09\uff0c\u800c\u503c\u7c7b\u578b\u7684\u5b9e\u4f8b\u662f\u5b89\u5168\u5730\u5728\u591a\u4e2a\u7ebf\u7a0b\u6216\u4efb\u52a1\u4e4b\u95f4\u4f20\u9012\u7684\u3002<\/p>\n<\/li>\n
    2. \n
      \u5f15\u7528\u7c7b\u578b<\/strong>\uff1a\u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\uff08class<\/code> \u7c7b\u578b\uff09\uff0c\u5b83\u4eec\u9ed8\u8ba4\u662f\u4e0d\u53ef Sendable<\/code> \u7684\u3002\u56e0\u4e3a\u5f15\u7528\u7c7b\u578b\u662f\u5171\u4eab\u7684\uff0c\u591a\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u6216\u4fee\u6539\u5b83\u4eec\u7684\u72b6\u6001\uff0c\u56e0\u6b64\u9700\u8981\u663e\u5f0f\u5730\u8fdb\u884c\u540c\u6b65\u3002\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7c7b\u9075\u5b88 Sendable<\/code> \u534f\u8bae\u6765\u6807\u8bb0\u5b83\u4e3a\u7ebf\u7a0b\u5b89\u5168\uff0c\u6216\u8005\u5c06\u5b83\u4eec\u5305\u88c5\u6210\u4e00\u4e2a\u503c\u7c7b\u578b\uff08\u5982 struct<\/code>\uff09\u6765\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>\n<\/li>\n
    3. \n
      \u7ed3\u6784\u4f53\u548c\u679a\u4e3e<\/strong>\uff1a\u7ed3\u6784\u4f53\u548c\u679a\u4e3e\u672c\u8d28\u4e0a\u662f\u503c\u7c7b\u578b\uff0c\u901a\u5e38\u662f Sendable<\/code> \u7684\u3002\u552f\u4e00\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u5b83\u4eec\u5305\u542b\u5f15\u7528\u7c7b\u578b\u7684\u5c5e\u6027\uff0c\u90a3\u4e48\u8fd9\u4e9b\u5f15\u7528\u7c7b\u578b\u5fc5\u987b\u663e\u5f0f\u7b26\u5408 Sendable<\/code> \u534f\u8bae\uff0c\u624d\u80fd\u4f7f\u6574\u4e2a\u7ed3\u6784\u4f53\u6216\u679a\u4e3e\u7b26\u5408 Sendable<\/code> \u534f\u8bae\u3002<\/p>\n<\/li>\n
    4. \n
      \u975e Sendable \u7c7b\u578b<\/strong>\uff1a\u5982\u679c\u4e00\u4e2a\u7c7b\u578b\u6ca1\u6709\u7b26\u5408 Sendable<\/code> \u7684\u89c4\u5219\uff08\u4f8b\u5982\uff0c\u542b\u6709\u975e Sendable<\/code> \u7c7b\u578b\u7684\u5c5e\u6027\uff09\uff0c\u90a3\u4e48\u8be5\u7c7b\u578b\u5c31\u4e0d\u662f Sendable<\/code> \u7684\uff0c\u4e0d\u80fd\u5728\u5e76\u53d1\u4efb\u52a1\u4e2d\u4f20\u9012\u3002<\/p>\n<\/li>\n<\/ol>\n
      \u4f8b\u5b50<\/h3>\n
      1. Sendable \u7c7b\u578b\u7684\u57fa\u672c\u793a\u4f8b<\/h4>\n
      struct Point: Sendable {\n    var x: Int\n    var y: Int\n}\n\nlet point = Point(x: 10, y: 20)\nTask {\n    \/\/ \u53ef\u4ee5\u5b89\u5168\u5730\u5c06 point \u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\n    print(point)\n}<\/code><\/pre>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cPoint<\/code> \u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\uff0c\u7b26\u5408 Sendable<\/code> \u534f\u8bae\uff0c\u56e0\u6b64\u5b83\u7684\u5b9e\u4f8b\u53ef\u4ee5\u5b89\u5168\u5730\u8de8\u4efb\u52a1\u4f20\u9012\u3002<\/p>\n
      2. \u975e Sendable \u7c7b\u578b\u793a\u4f8b<\/h4>\n
      class SharedData {\n    var value: Int = 0\n}\n\nlet data = SharedData()\n\nTask {\n    \/\/ \u7f16\u8bd1\u9519\u8bef\uff0cSharedData \u7c7b\u578b\u4e0d\u662f Sendable\n    \/\/ print(data)\n}<\/code><\/pre>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cSharedData<\/code> \u662f\u4e00\u4e2a\u7c7b\uff0c\u7c7b\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u9ed8\u8ba4\u4e0d\u662f Sendable<\/code> \u7684\u3002\u56e0\u6b64\uff0c\u5b83\u7684\u5b9e\u4f8b\u4e0d\u80fd\u5728\u5e76\u53d1\u4efb\u52a1\u4e4b\u95f4\u4f20\u9012\u3002\u4e3a\u4e86\u4f7f\u5b83\u6210\u4e3a Sendable<\/code> \u7c7b\u578b\uff0c\u53ef\u4ee5\u663e\u5f0f\u5730\u8ba9\u5b83\u9075\u5faa Sendable<\/code> \u534f\u8bae\uff0c\u5e76\u786e\u4fdd\u5b83\u7684\u6570\u636e\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n
      3. \u4f7f\u5f15\u7528\u7c7b\u578b\u7b26\u5408 Sendable<\/h4>\n
      class SafeData: Sendable {\n    private var value: Int = 0\n\n    func updateValue(_ newValue: Int) {\n        value = newValue\n    }\n\n    func getValue() -> Int {\n        return value\n    }\n}\n\nlet safeData = SafeData()\n\nTask {\n    \/\/ SafeData \u7b26\u5408 Sendable\uff0c\u53ef\u4ee5\u5728\u5e76\u53d1\u4efb\u52a1\u4e2d\u5b89\u5168\u5730\u4f20\u9012\n    await safeData.updateValue(10)\n}<\/code><\/pre>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cSafeData<\/code> \u9075\u5faa\u4e86 Sendable<\/code> \u534f\u8bae\u5e76\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168\uff0c\u56e0\u6b64\u5b83\u7684\u5b9e\u4f8b\u53ef\u4ee5\u5728\u5e76\u53d1\u4efb\u52a1\u4e4b\u95f4\u5b89\u5168\u4f20\u9012\u3002<\/p>\n
      Sendable \u7c7b\u578b\u7684\u9650\u5236<\/h3>\n