{"id":3870,"date":"2025-05-31T10:48:58","date_gmt":"2025-06-05T03:41:57","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3870"},"modified":"2025-06-05T10:48:58","modified_gmt":"2025-06-05T03:41:57","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e9%96%89%e5%8c%85","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e9%96%89%e5%8c%85\/","title":{"rendered":"2025 \u6700\u65b0 Swift \u9589\u5305\u4f7f\u7528\u6559\u5b78\uff1a\u5b9a\u7fa9\u3001\u50b3\u905e\u8207\u5c3e\u96a8\u9589\u5305"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Swift, \u9589\u5305, \u5b9a\u7fa9\u9589\u5305, \u50b3\u905e\u9589\u5305, \u5c3e\u96a8\u9589\u5305, Swift 2025\"><\/p>\n<h1>2025 \u6700\u65b0 Swift \u9589\u5305\u4f7f\u7528\u6559\u5b78<\/h1>\n<p>\u5728 Swift \u4e2d\uff0c\u9589\u5305\uff08Closure\uff09\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u8a9e\u6cd5\u7d50\u69cb\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6709\u6548\u7387\u5730\u57f7\u884c\u7a0b\u5f0f\u78bc\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u9589\u5305\uff0c\u5305\u62ec\u5176\u5b9a\u7fa9\u3001\u50b3\u905e\u65b9\u5f0f\u3001\u5c3e\u96a8\u9589\u5305\u7684\u4f7f\u7528\uff0c\u4ee5\u53ca\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u548c\u5e38\u898b\u932f\u8aa4\u7684\u6392\u9664\u65b9\u6cd5\u3002<\/p>\n<h2>\u9589\u5305\u7684\u5b9a\u7fa9<\/h2>\n<p>\u9589\u5305\u662f\u4e00\u7a2e\u81ea\u5305\u542b\u7684\u51fd\u5f0f\uff0c\u80fd\u5920\u63a5\u53d7\u53c3\u6578\u4e26\u56de\u50b3\u503c\u3002\u9589\u5305\u53ef\u4ee5\u88ab\u7576\u4f5c\u53c3\u6578\u50b3\u905e\u7d66\u5176\u4ed6\u51fd\u5f0f\uff0c\u4e5f\u53ef\u4ee5\u4f5c\u70ba\u51fd\u5f0f\u7684\u56de\u50b3\u503c\u3002\u9589\u5305\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: swift\">\n{ (parameters) -> ReturnType in\n    statements\n}\n<\/pre>\n<p>\u5728\u9019\u6bb5\u8a9e\u6cd5\u4e2d\uff1a<br \/>\n&#8211; <strong>parameters<\/strong>\uff1a\u9589\u5305\u63a5\u53d7\u7684\u53c3\u6578\u3002<br \/>\n&#8211; <strong>ReturnType<\/strong>\uff1a\u9589\u5305\u56de\u50b3\u7684\u503c\u7684\u985e\u578b\u3002<br \/>\n&#8211; <strong>statements<\/strong>\uff1a\u9589\u5305\u57f7\u884c\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5b9a\u7fa9\u4e00\u500b\u8a08\u7b97\u5169\u500b\u6578\u5b57\u548c\u7684\u9589\u5305\u7684\u793a\u7bc4\uff1a<\/p>\n<pre class=\"brush: swift\">\nlet addClosure = { (a: Int, b: Int) -> Int in\n    return a + b\n}\n<\/pre>\n<h2>\u50b3\u905e\u9589\u5305<\/h2>\n<p>\u9589\u5305\u53ef\u4ee5\u4f5c\u70ba\u53c3\u6578\u50b3\u905e\u7d66\u5176\u4ed6\u51fd\u5f0f\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u5b9a\u7fa9\u4e00\u500b\u51fd\u5f0f\uff0c\u63a5\u53d7\u4e00\u500b\u9589\u5305\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u57f7\u884c\u8a72\u9589\u5305\uff1a<\/p>\n<pre class=\"brush: swift\">\nfunc doSomethingWithClosure(closure: (Int, Int) -> Int) {\n    let result = closure(2, 3)\n    print(result)\n}\n<\/pre>\n<p>\u7136\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u4e4b\u524d\u5b9a\u7fa9\u7684\u9589\u5305\u50b3\u905e\u7d66\u9019\u500b\u51fd\u5f0f\uff1a<\/p>\n<pre class=\"brush: swift\">\ndoSomethingWithClosure(closure: addClosure)\n\/\/ 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\u4e2d\u7684\u9589\u5305\uff0c\u5305\u62ec\u5982\u4f55\u5b9a\u7fa9\u3001\u50b3\u905e\u53ca\u4f7f\u7528\u5c3e\u96a8\u9589\u5305\u3002\u5e0c\u671b\u9019\u4e9b\u8cc7\u8a0a\u80fd\u5e6b\u52a9\u60a8\u5728\u7a0b\u5f0f\u78bc\u4e2d\u66f4\u6709\u6548\u7387\u5730\u4f7f\u7528\u9589\u5305\u3002<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<p>**Q1: \u9589\u5305\u8207\u51fd\u5f0f\u6709\u4ec0\u9ebc\u5340\u5225\uff1f**<br \/>\nA1: \u9589\u5305\u662f\u4e00\u7a2e\u81ea\u5305\u542b\u7684\u51fd\u5f0f\uff0c\u53ef\u4ee5\u6355\u7372\u4e0a\u4e0b\u6587\u4e2d\u7684\u8b8a\u6578\uff0c\u800c\u51fd\u5f0f\u4e0d\u5177\u5099\u6b64\u7279\u6027\u3002<\/p>\n<p>**Q2: \u5982\u4f55\u907f\u514d\u9589\u5305\u9020\u6210\u7684\u8a18\u61b6\u9ad4\u6d29\u6f0f\uff1f**<br \/>\nA2: \u4f7f\u7528 [weak self] \u6216 [unowned self] \u4f86\u6e1b\u5c11\u5faa\u74b0\u5f15\u7528\u7684\u98a8\u96aa\u3002<\/p>\n<p>**Q3: \u5c3e\u96a8\u9589\u5305\u7684\u6700\u4f73\u4f7f\u7528\u5834\u666f\u662f\u4ec0\u9ebc\uff1f**<br \/>\nA3: 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