{"id":544,"date":"2018-02-23T23:39:09","date_gmt":"2018-02-23T15:39:09","guid":{"rendered":"http:\/\/60.205.208.74\/2018\/02\/23\/swift-%e8%87%aa%e5%8a%a8%e5%bc%95%e7%94%a8%e8%ae%a1%e6%95%b0%ef%bc%88arc%ef%bc%89\/"},"modified":"2018-02-23T23:39:09","modified_gmt":"2018-02-23T15:39:09","slug":"swift-%e8%87%aa%e5%8a%a8%e5%bc%95%e7%94%a8%e8%ae%a1%e6%95%b0%ef%bc%88arc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.puzi7.net\/?p=544","title":{"rendered":"Swift \u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff08ARC\uff09"},"content":{"rendered":"<span itemprop=\"description\"><div class=\"article-body\">\n<div class=\"article-intro\" id=\"content\">\n<h1>Swift \u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff08ARC\uff09<\/h1>\n<p>Swift \u4f7f\u7528\u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff08ARC\uff09\u8fd9\u4e00\u673a\u5236\u6765\u8ddf\u8e2a\u548c\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58<\/p>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\u6211\u4eec\u4e0d\u9700\u8981\u53bb\u624b\u52a8\u91ca\u653e\u5185\u5b58\uff0c\u56e0\u4e3a ARC \u4f1a\u5728\u7c7b\u7684\u5b9e\u4f8b\u4e0d\u518d\u88ab\u4f7f\u7528\u65f6\uff0c\u81ea\u52a8\u91ca\u653e\u5176\u5360\u7528\u7684\u5185\u5b58\u3002<\/p>\n<p>\u4f46\u5728\u6709\u4e9b\u65f6\u5019\u6211\u4eec\u8fd8\u662f\u9700\u8981\u5728\u4ee3\u7801\u4e2d\u5b9e\u73b0\u5185\u5b58\u7ba1\u7406\u3002<\/p>\n<h3>ARC \u529f\u80fd<\/h3>\n<ul class=\"list\">\n<li>\n<p>\u5f53\u6bcf\u6b21\u4f7f\u7528 init() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u7c7b\u7684\u65b0\u7684\u5b9e\u4f8b\u7684\u65f6\u5019\uff0cARC \u4f1a\u5206\u914d\u4e00\u5927\u5757\u5185\u5b58\u7528\u6765\u50a8\u5b58\u5b9e\u4f8b\u7684\u4fe1\u606f\u3002<\/p>\n<\/li>\n<li>\n<p>\u5185\u5b58\u4e2d\u4f1a\u5305\u542b\u5b9e\u4f8b\u7684\u7c7b\u578b\u4fe1\u606f\uff0c\u4ee5\u53ca\u8fd9\u4e2a\u5b9e\u4f8b\u6240\u6709\u76f8\u5173\u5c5e\u6027\u7684\u503c\u3002<\/p>\n<\/li>\n<li>\n<p>\u5f53\u5b9e\u4f8b\u4e0d\u518d\u88ab\u4f7f\u7528\u65f6\uff0cARC \u91ca\u653e\u5b9e\u4f8b\u6240\u5360\u7528\u7684\u5185\u5b58\uff0c\u5e76\u8ba9\u91ca\u653e\u7684\u5185\u5b58\u80fd\u632a\u4f5c\u4ed6\u7528\u3002<\/p>\n<\/li>\n<li>\n<p>\u4e3a\u4e86\u786e\u4fdd\u4f7f\u7528\u4e2d\u7684\u5b9e\u4f8b\u4e0d\u4f1a\u88ab\u9500\u6bc1\uff0cARC \u4f1a\u8ddf\u8e2a\u548c\u8ba1\u7b97\u6bcf\u4e00\u4e2a\u5b9e\u4f8b\u6b63\u5728\u88ab\u591a\u5c11\u5c5e\u6027\uff0c\u5e38\u91cf\u548c\u53d8\u91cf\u6240\u5f15\u7528\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9e\u4f8b\u8d4b\u503c\u7ed9\u5c5e\u6027\u3001\u5e38\u91cf\u6216\u53d8\u91cf\uff0c\u5b83\u4eec\u90fd\u4f1a\u521b\u5efa\u6b64\u5b9e\u4f8b\u7684\u5f3a\u5f15\u7528\uff0c\u53ea\u8981\u5f3a\u5f15\u7528\u8fd8\u5728\uff0c\u5b9e\u4f8b\u662f\u4e0d\u5141\u8bb8\u88ab\u9500\u6bc1\u7684\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>ARC \u5b9e\u4f8b<\/h3>\n<pre>\nclass Person {\n    let name: String\n    init(name: String) {\n        self.name = name\n        print(\"\\(name) \u5f00\u59cb\u521d\u59cb\u5316\")\n    }\n    deinit {\n        print(\"\\(name) \u88ab\u6790\u6784\")\n    }\n}\n\n\/\/ \u503c\u4f1a\u88ab\u81ea\u52a8\u521d\u59cb\u5316\u4e3anil\uff0c\u76ee\u524d\u8fd8\u4e0d\u4f1a\u5f15\u7528\u5230Person\u7c7b\u7684\u5b9e\u4f8b\nvar reference1: Person?\nvar reference2: Person?\nvar reference3: Person?\n\n\/\/ \u521b\u5efaPerson\u7c7b\u7684\u65b0\u5b9e\u4f8b\nreference1 = Person(name: \"Runoob\")\n\n\n\/\/\u8d4b\u503c\u7ed9\u5176\u4ed6\u4e24\u4e2a\u53d8\u91cf\uff0c\u8be5\u5b9e\u4f8b\u53c8\u4f1a\u591a\u51fa\u4e24\u4e2a\u5f3a\u5f15\u7528\nreference2 = reference1\nreference3 = reference1\n\n\/\/\u65ad\u5f00\u7b2c\u4e00\u4e2a\u5f3a\u5f15\u7528\nreference1 = nil\n\/\/\u65ad\u5f00\u7b2c\u4e8c\u4e2a\u5f3a\u5f15\u7528\nreference2 = nil\n\/\/\u65ad\u5f00\u7b2c\u4e09\u4e2a\u5f3a\u5f15\u7528\uff0c\u5e76\u8c03\u7528\u6790\u6784\u51fd\u6570\nreference3 = nil\n<\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u6267\u884c\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre>\nRunoob \u5f00\u59cb\u521d\u59cb\u5316\nRunoob \u88ab\u6790\u6784\n<\/pre>\n<hr>\n<h2>\u7c7b\u5b9e\u4f8b\u4e4b\u95f4\u7684\u5faa\u73af\u5f3a\u5f15\u7528<\/h2>\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cARC \u4f1a\u8ddf\u8e2a\u4f60\u6240\u65b0\u521b\u5efa\u7684 Person \u5b9e\u4f8b\u7684\u5f15\u7528\u6570\u91cf\uff0c\u5e76\u4e14\u4f1a\u5728 Person \u5b9e\u4f8b\u4e0d\u518d\u88ab\u9700\u8981\u65f6\u9500\u6bc1\u5b83\u3002\n<\/p>\n<p>\n\u7136\u800c\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u5199\u51fa\u8fd9\u6837\u7684\u4ee3\u7801\uff0c\u4e00\u4e2a\u7c7b\u6c38\u8fdc\u4e0d\u4f1a\u67090\u4e2a\u5f3a\u5f15\u7528\u3002\u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\u5728\u4e24\u4e2a\u7c7b\u5b9e\u4f8b\u4e92\u76f8\u4fdd\u6301\u5bf9\u65b9\u7684\u5f3a\u5f15\u7528\uff0c\u5e76\u8ba9\u5bf9\u65b9\u4e0d\u88ab\u9500\u6bc1\u3002\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u5faa\u73af\u5f3a\u5f15\u7528\u3002<\/p>\n<h3>\u5b9e\u4f8b<\/h3>\n<p>\u4e0b\u9762\u5c55\u793a\u4e86\u4e00\u4e2a\u4e0d\u7ecf\u610f\u4ea7\u751f\u5faa\u73af\u5f3a\u5f15\u7528\u7684\u4f8b\u5b50\u3002\u4f8b\u5b50\u5b9a\u4e49\u4e86\u4e24\u4e2a\u7c7b\uff1aPerson\u548cApartment\uff0c\u7528\u6765\u5efa\u6a21\u516c\u5bd3\u548c\u5b83\u5176\u4e2d\u7684\u5c45\u6c11:<\/p>\n<pre>\nclass Person {\n    let name: String\n    init(name: String) { self.name = name }\n    var apartment: Apartment?\n    deinit { print(\"\\(name) \u88ab\u6790\u6784\") }\n}\n\nclass Apartment {\n    let number: Int\n    init(number: Int) { self.number = number }\n    var tenant: Person?\n    deinit { print(\"Apartment #\\(number) \u88ab\u6790\u6784\") }\n}\n\n\/\/ \u4e24\u4e2a\u53d8\u91cf\u90fd\u88ab\u521d\u59cb\u5316\u4e3anil\nvar runoob: Person?\nvar number73: Apartment?\n\n\/\/ \u8d4b\u503c\nrunoob = Person(name: \"Runoob\")\nnumber73 = Apartment(number: 73)\n\n\/\/ \u610f\u611f\u53f9\u53f7\u662f\u7528\u6765\u5c55\u5f00\u548c\u8bbf\u95ee\u53ef\u9009\u53d8\u91cf runoob \u548c number73 \u4e2d\u7684\u5b9e\u4f8b\n\/\/ \u5faa\u73af\u5f3a\u5f15\u7528\u88ab\u521b\u5efa\nrunoob!.apartment = number73\nnumber73!.tenant = runoob\n\n\/\/ \u65ad\u5f00 runoob \u548c number73 \u53d8\u91cf\u6240\u6301\u6709\u7684\u5f3a\u5f15\u7528\u65f6\uff0c\u5f15\u7528\u8ba1\u6570\u5e76\u4e0d\u4f1a\u964d\u4e3a 0\uff0c\u5b9e\u4f8b\u4e5f\u4e0d\u4f1a\u88ab ARC \u9500\u6bc1\n\/\/ \u6ce8\u610f\uff0c\u5f53\u4f60\u628a\u8fd9\u4e24\u4e2a\u53d8\u91cf\u8bbe\u4e3anil\u65f6\uff0c\u6ca1\u6709\u4efb\u4f55\u4e00\u4e2a\u6790\u6784\u51fd\u6570\u88ab\u8c03\u7528\u3002\n\/\/ \u5f3a\u5f15\u7528\u5faa\u73af\u963b\u6b62\u4e86Person\u548cApartment\u7c7b\u5b9e\u4f8b\u7684\u9500\u6bc1\uff0c\u5e76\u5728\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u9020\u6210\u4e86\u5185\u5b58\u6cc4\u6f0f\nrunoob = nil\nnumber73 = nil\n<\/pre>\n<h3>\u89e3\u51b3\u5b9e\u4f8b\u4e4b\u95f4\u7684\u5faa\u73af\u5f3a\u5f15\u7528<\/h3>\n<p>Swift \u63d0\u4f9b\u4e86\u4e24\u79cd\u529e\u6cd5\u7528\u6765\u89e3\u51b3\u4f60\u5728\u4f7f\u7528\u7c7b\u7684\u5c5e\u6027\u65f6\u6240\u9047\u5230\u7684\u5faa\u73af\u5f3a\u5f15\u7528\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u5f31\u5f15\u7528<\/li>\n<li>\u65e0\u4e3b\u5f15\u7528<\/li>\n<\/ul>\n<p>\n\u5f31\u5f15\u7528\u548c\u65e0\u4e3b\u5f15\u7528\u5141\u8bb8\u5faa\u73af\u5f15\u7528\u4e2d\u7684\u4e00\u4e2a\u5b9e\u4f8b\u5f15\u7528\u53e6\u5916\u4e00\u4e2a\u5b9e\u4f8b\u800c\u4e0d\u4fdd\u6301\u5f3a\u5f15\u7528\u3002\u8fd9\u6837\u5b9e\u4f8b\u80fd\u591f\u4e92\u76f8\u5f15\u7528\u800c\u4e0d\u4ea7\u751f\u5faa\u73af\u5f3a\u5f15\u7528\u3002\n<\/p>\n<p>\n\u5bf9\u4e8e\u751f\u547d\u5468\u671f\u4e2d\u4f1a\u53d8\u4e3anil\u7684\u5b9e\u4f8b\u4f7f\u7528\u5f31\u5f15\u7528\u3002\u76f8\u53cd\u7684\uff0c\u5bf9\u4e8e\u521d\u59cb\u5316\u8d4b\u503c\u540e\u518d\u4e5f\u4e0d\u4f1a\u88ab\u8d4b\u503c\u4e3anil\u7684\u5b9e\u4f8b\uff0c\u4f7f\u7528\u65e0\u4e3b\u5f15\u7528\u3002\n<\/p>\n<h3>\u5f31\u5f15\u7528\u5b9e\u4f8b<\/h3>\n<pre>\nclass Module {\n    let name: String\n    init(name: String) { self.name = name }\n    var sub: SubModule?\n    deinit { print(\"\\(name) \u4e3b\u6a21\u5757\") }\n}\n\nclass SubModule {\n    let number: Int\n    \n    init(number: Int) { self.number = number }\n    \n    weak var topic: Module?\n    \n    deinit { print(\"\u5b50\u6a21\u5757 topic \u6570\u4e3a \\(number)\") }\n}\n\nvar toc: Module?\nvar list: SubModule?\ntoc = Module(name: \"ARC\")\nlist = SubModule(number: 4)\ntoc!.sub = list\nlist!.topic = toc\n\ntoc = nil\nlist = nil\n<\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u6267\u884c\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre>\nARC \u4e3b\u6a21\u5757\n\u5b50\u6a21\u5757 topic \u6570\u4e3a 4\n<\/pre>\n<h3>\u65e0\u4e3b\u5f15\u7528\u5b9e\u4f8b<\/h3>\n<pre>\nclass Student {\n    let name: String\n    var section: Marks?\n    \n    init(name: String) {\n        self.name = name\n    }\n    \n    deinit { print(\"\\(name)\") }\n}\nclass Marks {\n    let marks: Int\n    unowned let stname: Student\n    \n    init(marks: Int, stname: Student) {\n        self.marks = marks\n        self.stname = stname\n    }\n    \n    deinit { print(\"\u5b66\u751f\u7684\u5206\u6570\u4e3a \\(marks)\") }\n}\n\nvar module: Student?\nmodule = Student(name: \"ARC\")\nmodule!.section = Marks(marks: 98, stname: module!)\nmodule = nil\n<\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u6267\u884c\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre>\nARC\n\u5b66\u751f\u7684\u5206\u6570\u4e3a 98\n<\/pre>\n<hr>\n<h2>\u95ed\u5305\u5f15\u8d77\u7684\u5faa\u73af\u5f3a\u5f15\u7528<\/h2>\n<p>\u5faa\u73af\u5f3a\u5f15\u7528\u8fd8\u4f1a\u53d1\u751f\u5728\u5f53\u4f60\u5c06\u4e00\u4e2a\u95ed\u5305\u8d4b\u503c\u7ed9\u7c7b\u5b9e\u4f8b\u7684\u67d0\u4e2a\u5c5e\u6027\uff0c\u5e76\u4e14\u8fd9\u4e2a\u95ed\u5305\u4f53\u4e2d\u53c8\u4f7f\u7528\u4e86\u5b9e\u4f8b\u3002\u8fd9\u4e2a\u95ed\u5305\u4f53\u4e2d\u53ef\u80fd\u8bbf\u95ee\u4e86\u5b9e\u4f8b\u7684\u67d0\u4e2a\u5c5e\u6027\uff0c\u4f8b\u5982self.someProperty\uff0c\u6216\u8005\u95ed\u5305\u4e2d\u8c03\u7528\u4e86\u5b9e\u4f8b\u7684\u67d0\u4e2a\u65b9\u6cd5\uff0c\u4f8b\u5982self.someMethod\u3002\u8fd9\u4e24\u79cd\u60c5\u51b5\u90fd\u5bfc\u81f4\u4e86\u95ed\u5305 &#8220;\u6355\u83b7&#8221; self\uff0c\u4ece\u800c\u4ea7\u751f\u4e86\u5faa\u73af\u5f3a\u5f15\u7528\u3002<\/p>\n<h3>\u5b9e\u4f8b<\/h3>\n<p>\u4e0b\u9762\u7684\u4f8b\u5b50\u4e3a\u4f60\u5c55\u793a\u4e86\u5f53\u4e00\u4e2a\u95ed\u5305\u5f15\u7528\u4e86self\u540e\u662f\u5982\u4f55\u4ea7\u751f\u4e00\u4e2a\u5faa\u73af\u5f3a\u5f15\u7528\u7684\u3002\u4f8b\u5b50\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53ebHTMLElement\u7684\u7c7b\uff0c\u7528\u4e00\u79cd\u7b80\u5355\u7684\u6a21\u578b\u8868\u793a HTML \u4e2d\u7684\u4e00\u4e2a\u5355\u72ec\u7684\u5143\u7d20\uff1a<\/p>\n<pre>\nclass HTMLElement {\n    \n    let name: String\n    let text: String?\n    \n    lazy var asHTML: () -&gt; String = {\n        if let text = self.text {\n            return \"&lt;\\(self.name)&gt;\\(text)&lt;\/\\(self.name)&gt;\"\n        } else {\n            return \"&lt;\\(self.name) \/&gt;\"\n        }\n    }\n    \n    init(name: String, text: String? = nil) {\n        self.name = name\n        self.text = text\n    }\n    \n    deinit {\n        print(\"\\(name) is being deinitialized\")\n    }\n    \n}\n\n\/\/ \u521b\u5efa\u5b9e\u4f8b\u5e76\u6253\u5370\u4fe1\u606f\nvar paragraph: HTMLElement? = HTMLElement(name: \"p\", text: \"hello, world\")\nprint(paragraph!.asHTML())\n<\/pre>\n<p>HTMLElement \u7c7b\u4ea7\u751f\u4e86\u7c7b\u5b9e\u4f8b\u548c asHTML \u9ed8\u8ba4\u503c\u7684\u95ed\u5305\u4e4b\u95f4\u7684\u5faa\u73af\u5f3a\u5f15\u7528\u3002<\/p>\n<p>\u5b9e\u4f8b\u7684 asHTML \u5c5e\u6027\u6301\u6709\u95ed\u5305\u7684\u5f3a\u5f15\u7528\u3002\u4f46\u662f\uff0c\u95ed\u5305\u5728\u5176\u95ed\u5305\u4f53\u5185\u4f7f\u7528\u4e86self\uff08\u5f15\u7528\u4e86self.name\u548cself.text\uff09\uff0c\u56e0\u6b64\u95ed\u5305\u6355\u83b7\u4e86self\uff0c\u8fd9\u610f\u5473\u7740\u95ed\u5305\u53c8\u53cd\u8fc7\u6765\u6301\u6709\u4e86HTMLElement\u5b9e\u4f8b\u7684\u5f3a\u5f15\u7528\u3002\u8fd9\u6837\u4e24\u4e2a\u5bf9\u8c61\u5c31\u4ea7\u751f\u4e86\u5faa\u73af\u5f3a\u5f15\u7528\u3002<\/p>\n<p>\u89e3\u51b3\u95ed\u5305\u5f15\u8d77\u7684\u5faa\u73af\u5f3a\u5f15\u7528:\u5728\u5b9a\u4e49\u95ed\u5305\u65f6\u540c\u65f6\u5b9a\u4e49\u6355\u83b7\u5217\u8868\u4f5c\u4e3a\u95ed\u5305\u7684\u4e00\u90e8\u5206\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u89e3\u51b3\u95ed\u5305\u548c\u7c7b\u5b9e\u4f8b\u4e4b\u95f4\u7684\u5faa\u73af\u5f3a\u5f15\u7528\u3002<\/p>\n<hr>\n<h2>\u5f31\u5f15\u7528\u548c\u65e0\u4e3b\u5f15\u7528<\/h2>\n<p>\u5f53\u95ed\u5305\u548c\u6355\u83b7\u7684\u5b9e\u4f8b\u603b\u662f\u4e92\u76f8\u5f15\u7528\u65f6\u5e76\u4e14\u603b\u662f\u540c\u65f6\u9500\u6bc1\u65f6\uff0c\u5c06\u95ed\u5305\u5185\u7684\u6355\u83b7\u5b9a\u4e49\u4e3a\u65e0\u4e3b\u5f15\u7528\u3002\n<\/p>\n<p>\n\u76f8\u53cd\u7684\uff0c\u5f53\u6355\u83b7\u5f15\u7528\u6709\u65f6\u53ef\u80fd\u4f1a\u662fnil\u65f6\uff0c\u5c06\u95ed\u5305\u5185\u7684\u6355\u83b7\u5b9a\u4e49\u4e3a\u5f31\u5f15\u7528\u3002<\/p>\n<p>\u5982\u679c\u6355\u83b7\u7684\u5f15\u7528\u7edd\u5bf9\u4e0d\u4f1a\u7f6e\u4e3anil\uff0c\u5e94\u8be5\u7528\u65e0\u4e3b\u5f15\u7528\uff0c\u800c\u4e0d\u662f\u5f31\u5f15\u7528\u3002<\/p>\n<h3>\u5b9e\u4f8b<\/h3>\n<p>\u524d\u9762\u7684HTMLElement\u4f8b\u5b50\u4e2d\uff0c\u65e0\u4e3b\u5f15\u7528\u662f\u6b63\u786e\u7684\u89e3\u51b3\u5faa\u73af\u5f3a\u5f15\u7528\u7684\u65b9\u6cd5\u3002\u8fd9\u6837\u7f16\u5199HTMLElement\u7c7b\u6765\u907f\u514d\u5faa\u73af\u5f3a\u5f15\u7528\uff1a<\/p>\n<pre>\nclass HTMLElement {\n    \n    let name: String\n    let text: String?\n    \n    lazy var asHTML: () -&gt; String = {\n        [unowned self] in\n        if let text = self.text {\n            return \"&lt;\\(self.name)&gt;\\(text)&lt;\/\\(self.name)&gt;\"\n        } else {\n            return \"&lt;\\(self.name) \/&gt;\"\n        }\n    }\n    \n    init(name: String, text: String? = nil) {\n        self.name = name\n        self.text = text\n    }\n    \n    deinit {\n        print(\"\\(name) \u88ab\u6790\u6784\")\n    }\n    \n}\n\n\/\/\u521b\u5efa\u5e76\u6253\u5370HTMLElement\u5b9e\u4f8b\nvar paragraph: HTMLElement? = HTMLElement(name: \"p\", text: \"hello, world\")\nprint(paragraph!.asHTML())\n\n\/\/ HTMLElement\u5b9e\u4f8b\u5c06\u4f1a\u88ab\u9500\u6bc1\uff0c\u5e76\u80fd\u770b\u5230\u5b83\u7684\u6790\u6784\u51fd\u6570\u6253\u5370\u51fa\u7684\u6d88\u606f\nparagraph = nil\n<\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u6267\u884c\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre>\n&lt;p&gt;hello, world&lt;\/p&gt;\np \u88ab\u6790\u6784\n<\/pre>\n<\/p><\/div>\n<\/p><\/div>\n<span>","protected":false},"excerpt":{"rendered":"<p class=\"excerpt\"><span itemprop=\"description\">Swift \u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff08ARC\uff09 Swift \u4f7f\u7528\u81ea\u52a8\u5f15\u7528\u8ba1\u6570\uff08ARC\uff09\u8fd9\u4e00\u673a\u5236\u6765\u8ddf\u8e2a\u548c&hellip;<\/span><\/p>\n<p class=\"more-link-p btn-align-right\"><a class=\"green zoom-btn\" href=\"https:\/\/www.puzi7.net\/?p=544\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,28],"tags":[74,119],"class_list":["post-544","post","type-post","status-publish","format-standard","hentry","category-mobile","category-swift","tag-ios","tag-swift","zoom-theme-has-thumb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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